Combining Philosophers

All the ideas for Karl Marx, Werner Heisenberg and Robert Geroch

unexpand these ideas     |    start again     |     specify just one area for these philosophers


50 ideas

1. Philosophy / D. Nature of Philosophy / 5. Aims of Philosophy / a. Philosophy as worldly
Philosophers have interpreted the world, but the point is to change it [Marx]
     Full Idea: The philosophers have only interpreted the world, in various ways; the point is to change it.
     From: Karl Marx (Theses on Feuerbach [1846], §XI)
     A reaction: The 'point' of what? Personally I am more with Aristotle - that the aim is to create a society in which we can all aspire to contemplate like gods. As an interim statement of aim, though, one must respect Marx. But was he a philosopher?
2. Reason / A. Nature of Reason / 5. Objectivity
Whether human thinking can be 'true' must be decided in practice, not theory [Marx]
     Full Idea: The question whether objective truth can be attributed to human thinking is not a question of theory but is a practical question; man must prove the truth of his thinking in practice.
     From: Karl Marx (Theses on Feuerbach [1846], §II)
     A reaction: This would appear to be an assertion of the pragmatic view of truth well before Peirce. The obvious objections arise, such as whether falsehood (Plato's 'noble lie') might not have equal practical success, and whether truth might be disastrous.
6. Mathematics / C. Sources of Mathematics / 4. Mathematical Empiricism / b. Indispensability of mathematics
If it can't be expressed mathematically, it can't occur in nature? [Heisenberg]
     Full Idea: The solution was to turn around the question How can one in the known mathematical scheme express a given experimental situation? and ask Is it true that only such situations can arise in nature as can be expressed in the mathematical formalism?
     From: Werner Heisenberg (Physics and Philosophy [1958], 02)
     A reaction: This has the authority of the great Heisenberg, and is the ultimate expression of 'mathematical physics', beyond anything Galileo or Newton ever conceived. I suppose Pythagoras would have thought that Heisenberg was obviously right.
7. Existence / D. Theories of Reality / 2. Realism
Quantum theory shows that exact science does not need dogmatic realism [Heisenberg]
     Full Idea: It is only through quantum theory that we have learned that exact science is possible without the basis of dogmatic realism.
     From: Werner Heisenberg (Physics and Philosophy [1958], 05)
7. Existence / D. Theories of Reality / 4. Anti-realism
Quantum theory does not introduce minds into atomic events [Heisenberg]
     Full Idea: Certainly quantum theory does not contain genuine subjective features, it does not introduce the mind of the physicist as a part of the atomic event.
     From: Werner Heisenberg (Physics and Philosophy [1958], 03)
     A reaction: This should be digested by anyone who wants to erect some dodgy anti-realist, idealist, subjective metaphysics on the basis of the Copenhagen interpretation of quantum mechanics.
8. Modes of Existence / C. Powers and Dispositions / 2. Powers as Basic
A 'probability wave' is a quantitative version of Aristotle's potential, a mid-way type of reality [Heisenberg]
     Full Idea: The 1924 idea of the 'probability wave' meant a tendency for something. It was a quantitative version of the old concept of 'potentia' in Aristotelian philosophy ...a strange kind of physical reality just in the middle between possibility and reality.
     From: Werner Heisenberg (Physics and Philosophy [1958], 02)
     A reaction: [compressed] As far as I can see, he is talking about a disposition or power, which is exactly between a mere theoretical possibility and an actuality. See the Mumford/Lill Anjum proposal for a third modal value, between possible and necessary.
9. Objects / B. Unity of Objects / 2. Substance / a. Substance
We can retain the idea of 'substance', as indestructible mass or energy [Heisenberg]
     Full Idea: One could consider mass and energy as two different forms of the same 'substance' and thereby keep the idea of substance as indestructible.
     From: Werner Heisenberg (Physics and Philosophy [1958], 07)
9. Objects / C. Structure of Objects / 2. Hylomorphism / b. Form as principle
Basic particles have a mathematical form, which is more important than their substance [Heisenberg]
     Full Idea: The smallest parts of matter are not the fundamental Beings, as in the philosophy of Democritus, but are mathematical forms. Here it is quite evident that the form is more important than the substance of which it is the form.
     From: Werner Heisenberg (Physics and Philosophy [1958], 04)
     A reaction: Heisenberg is quite consciously endorsing hylomorphism here, with a Pythagorean twist to it.
14. Science / D. Explanation / 2. Types of Explanation / e. Lawlike explanations
We give a mathematical account of a system of natural connections in order to clarify them [Heisenberg]
     Full Idea: When we represent a group of connections by a closed and coherent set of concepts, axioms, definitions and laws which in turn is represented by a mathematical scheme we have isolated and idealised them with the purpose of clarification.
     From: Werner Heisenberg (Physics and Philosophy [1958], 06)
     A reaction: Attacks on the regularity theory of laws, and the notion that explanation is by laws, tend to downplay this point - that obtaining clarity and precision is a sort of explanation, even if it fails to go deeper.
14. Science / D. Explanation / 2. Types of Explanation / j. Explanations by reduction
You can only explain the qualities of large objects using entities which lack those qualities [Heisenberg]
     Full Idea: It is impossible to explain the manifest qualities of ordinary middle-sized objects except by tracing these back to the behaviour of entities which themselves no longer possess these qualities.
     From: Werner Heisenberg (Ancient Thought in Modern Physics [1937], p.119), quoted by William Lycan - Consciousness 8.10
     A reaction: Compare the similar wonderful remark by Lucretius (Idea 5713). If we accept this as a general principle for all of nature (including us) - and I do - then it is silly to complain that consciousness isn't found in basic physics.
16. Persons / E. Rejecting the Self / 2. Self as Social Construct
The authentic self exists at the level of class, rather than the individual [Marx, by Dunt]
     Full Idea: Instead of focusing on the individual, Marxism suggested that the authentic self was at the social level in the form of class.
     From: report of Karl Marx (Theses on Feuerbach [1846]) by Ian Dunt - How to be a Liberal 6
     A reaction: [not sure of the best source in Marx] This idea is expressed here by a defender of liberal individualism. Dunt persuasively attacks any concept of the self as part of some group, rather than as being an individual.
18. Thought / E. Abstraction / 3. Abstracta by Ignoring
Maths deals with quantities of physical significance, ignoring irrelevant features [Geroch]
     Full Idea: Mathematics can serve to provide a framework within which one deals only with quantities of physical significance, ignoring other, irrelevant things.
     From: Robert Geroch (Mathematical Physics [1985], p.1), quoted by Charles Chihara - A Structural Account of Mathematics 9.8
     A reaction: This is a modern physicist espousing abstractionism, as derided and dismissed by Frege and Geach. It's common sense, really.
22. Metaethics / A. Ethics Foundations / 2. Source of Ethics / e. Human nature
The human essence is not found in individuals but in social relations [Marx]
     Full Idea: The human essence is no abstraction inherent in each single individual; in its reality it is the ensemble of the social relations.
     From: Karl Marx (Theses on Feuerbach [1846], §VI)
     A reaction: This is a key Marxist doctrine, and the central difference from Aristotle. Personally I am more with Aristotle, but the truth obviously lies somewhere in between. Man must be a 'social being', or there wouldn't be any social relations.
22. Metaethics / A. Ethics Foundations / 2. Source of Ethics / j. Ethics by convention
Armies and businesses create moralities in which their activity can do no wrong [Marx, by Weil]
     Full Idea: Marx saw that social groups manufacture moralities for their own use, so their activity is placed outside the reach of evil. Thus the first articles of soldiers and businessmen is to deny that it is possible to do evil while waging war or doing business.
     From: report of Karl Marx (works [1860]) by Simone Weil - Fragments: London 1943 p.146
     A reaction: This is especially true of the modern reverence for 'market forces'. It is a key debate in the ethics of warfare - compare Walzer and McMahon. A striking thought, obviously containing a lot of truth.
24. Political Theory / B. Nature of a State / 2. State Legitimacy / d. General will
The real will of the cooperative will replace the 'will of the people' [Marx]
     Full Idea: Under collective property, the so called will of the people disappears in order to make way for the real will of the cooperative.
     From: Karl Marx (Grundrisse [1876], p.563), quoted by Peter Singer - Marx 10
     A reaction: [from an 1874 note on Bakunin's 'Statism and Anarchy'] So how do you settle on the 'real' will of a cooperative? The travesty is when a ruling elite decide that, without consultation. An institution is needed. This is still a social contract.
24. Political Theory / C. Ruling a State / 4. Changing the State / c. Revolution
The middle class gain freedom through property, but workers can only free all of humanity [Marx, by Singer]
     Full Idea: Where the middle class can win freedom for themselves on the basis of rights to property - thus excluding others from their freedom - the working class have nothing but their title as human beings. They only liberate themselves by liberating humanity.
     From: report of Karl Marx (Contrib to Critique of Hegel's Phil of Right [1844]) by Peter Singer - Marx 4
     A reaction: Individual workers might gain freedom via education, marriage, or entrepreneurship, or by opting for total simplicity of life, but in general Marx seems to be right about this. But we must ask what sort of 'freedom' is needed.
Theory is as much a part of a revolution as material force is [Marx]
     Full Idea: Material force must be overthrown by material force. But theory also becomes a material force once it has gripped the masses.
     From: Karl Marx (Contrib to Critique of Hegel's Phil of Right [1844], Intro p.69), quoted by Peter Singer - Marx 4
     A reaction: A huge problem, I think, is that every theory (even conservatism) has to be simplified in a democracy if it is to grip the imagination of the majority. My current hatred is labels in political philosophy. They give us a cartoon view of the world.
In moving from capitalism to communism a revolutionary dictatorship of the proletariat is needed [Marx]
     Full Idea: Between the capitalist and communist society lies the revolutionary transformation of the one into the other. Corresponding to this is a political transition period in which the state can be nothing but the revolutionary dictatorship of the proletariat.
     From: Karl Marx (Critique of the Gotha Program [1875], IV)
     A reaction: This hugely influential idea was catastrophic for the twentieth century, because the leaders of the proletarian dictatorship adored and abused the power, and wouldn't give it up for some feeble next stage.
24. Political Theory / D. Ideologies / 6. Liberalism / d. Liberal freedom
Liberal freedom is the right to be separate, and ignores the union of man with man [Marx]
     Full Idea: The liberal right of man to freedom is not based on the union of man with man, but on the separation of man from man; it is the right to this separation.
     From: Karl Marx (works [1860]), quoted by Will Kymlicka - Contemporary Political Philosophy (1st edn) 7.2.a
     A reaction: [quoted from an anthology] It is interesting that liberal freedom is the right NOT to be involved in politics, and even not to vote in elections. Home counties England (high hedges etc) is the embodiment of the freedom not to be involved in society.
24. Political Theory / D. Ideologies / 6. Liberalism / g. Liberalism critique
Liberals want the right to be separate, rather than for people to be united [Marx]
     Full Idea: The [liberal] right of man to freedom is not based on the union of man with man, but on the separation of man from man. It is the right to this separation.
     From: Karl Marx (works [1860], p.53), quoted by Will Kymlicka - Contemporary Political Philosophy (2nd edn) 7
     A reaction: [in collection ed.McLelland p.53] That nicely encapsulates the debate. Modern liberal thinkers regret the loss of community, but people in authoritarian communities yearn for separation. You can have too much 'union'!
24. Political Theory / D. Ideologies / 7. Communitarianism / a. Communitarianism
Early Marx anticipates communitarian objections to liberalism [Marx, by Oksala]
     Full Idea: The early writings of Marx anticipate the communitarian critique of liberalism.
     From: report of Karl Marx (works [1860]) by Johanna Oksala - Political Philosophy: all that matters Ch.8
     A reaction: [Oksala says modern writers seem to prefer this to the hardcore later Marx, which is presumably too 'scientific'. He says 'Capital Vol 1' is Marx's most important work]
24. Political Theory / D. Ideologies / 9. Communism
Man is dominated by money, which is the essence of his alienation [Marx]
     Full Idea: Money is the alienated essence of man's labour and life, and this alien essence dominates him as he worships it.
     From: Karl Marx (On the Jewish Question [1844], p.60), quoted by Peter Singer - Marx 3
     A reaction: Presumably this is inherit in the very nature of money, rather than in the wickedness of capitalists who control it. But money is not inherently alienting for the rich, or for the comfortable bourgeoisie (is it?).
From each according to his ability, to each according to his need [Marx]
     Full Idea: From each according to his ability, to each according to his need.
     From: Karl Marx (Critique of the Gotha Program [1875]), quoted by Peter Singer - Marx 9
     A reaction: Singer says this was not original to Marx, and he placed little emphasis on it. The obvious capitalist response is to ask how you will motivate someone who has huge abilities but few needs. It implies huge inequalities of altruism.
By saying the material dialectic of history aspires to the best, Marx agreed with capitalism [Weil on Marx]
     Full Idea: When Marx inverted Hegel's dialectic of history, by substituting matter for mind as the motive, he attributed to matter the essence of mind, an unceasing aspiration towards the best - which was in keeping with the general current of capitalist thought.
     From: comment on Karl Marx (works [1860]) by Simone Weil - Reflections on Liberty and Social Oppression p.43
     A reaction: [compressed] A rather nice debating point! Marx seems to share the universal nineteenth century belief in unremitting progress. Without that, it is impossible to believe that a revolution will necessarily improve anything.
False consciousness results from concealment by the superstructure [Marx, by Singer]
     Full Idea: False consciousness involves failing to see things as they really are. It comes about because a society's superstructure can conceal the real basis of the society.
     From: report of Karl Marx (works [1860]) by Peter Singer - Marx 9
     A reaction: That seems a poor label, probably revealing a Hegelian background. It seems a matter of knowledge rather than consciousness. Can a whole mind be in a state of error?
Marx says force is everything, and that the weak will become strong, while remaining the weak [Weil on Marx]
     Full Idea: Marx posits on the one hand that force alone governs social relations to the exclusion of anything else, and on the other hand that one day the weak, while remaining weak, will nevertheless be stronger. He believed in miracles.
     From: comment on Karl Marx (works [1860]) by Simone Weil - Fragments: London 1943 p.149
     A reaction: This is close to the obvious contradiction if the working classes despise the middle classes (the dreaded 'bourgeoisie') while their only aspiration is to be like them. It is hard to custom design a new class to which they could both aspire.
Must production determine superstructure, or could it be the other way round? [Singer on Marx]
     Full Idea: Once the 'interaction' between the superstructure and the productive forces is admitted, is it still possible to maintain that production determines the superstructure, rather than the other way round?
     From: comment on Karl Marx (Capital Vol. 1 [1867]) by Peter Singer - Marx 7
     A reaction: It is much harder to defend historical determinism if Singer is right about this. Modern capitalism won't admit of the sort of simple distinctions that mark was looking for.
Marx rejected equal rights because they never actually treat people as equals [Marx, by Kymlicka]
     Full Idea: Marx rejected the idea of equal rights, not because he was not a friend to the idea of treating people as equals, but precisely because he thought rights failed to live up to that ideal.
     From: report of Karl Marx (works [1860]) by Will Kymlicka - Contemporary Political Philosophy (1st edn) 5.1
     A reaction: Presumably because the power to award 'rights' goes to the highest bidder. If equality is to be enshrined in law, it is a bit difficult to see how else to manage it.
Even decently paid workers still have their produce bought with money stolen from them [Marx]
     Full Idea: Even if the workers are paid a fair wage, the whole thing still remains the age-old activity of the conqueror, who buys commodities from the conquered with the money has has stolen from them,
     From: Karl Marx (Capital Vol. 1 [1867], p.728), quoted by Johanna Oksala - Political Philosophy: all that matters Ch.8
     A reaction: [Penguin edition cited] The word 'stolen' is obviously dubious here. 'Exploitation' is a much more accurate word. One might talk of 'blackmail' or 'extortion' rather than theft.
People who only have their labour power are the slaves of those permitting them to work [Marx]
     Full Idea: The man who possesses no other property than his labour power must, in all conditions of society and culture, be the slave of other men who have made themselves the owners of the material conditions of labour. He can only work with their permission.
     From: Karl Marx (Critique of the Gotha Program [1875], I)
     A reaction: In a world of vast multinationals, the person giving the permission to work is nearly always dependent on some higher level permission. In any sort of society people can only work with the consensus of other people.
Freedom only comes when labour is no longer necessary [Marx]
     Full Idea: The realm of freedom actually begins only where labour which is determined by necessity and mundane considerations ceases.
     From: Karl Marx (Capital Vol. 3 [1873], p.496), quoted by Peter Singer - Marx 8
     A reaction: This is a bit discouraging fo idealistic dreamers. Modern political thought needs an ecological dimension to this problem. If society always needs a fair degree of labour, there must be a way to maximise freedom in that context.
Freedom is making the state subordinate to its society [Marx]
     Full Idea: Freedom consists in converting the state from an organ superimposed on society into one completely subordinate to it.
     From: Karl Marx (Critique of the Gotha Program [1875], IV)
     A reaction: The intermediate stage is dictatorship of the proletariat (presumably exercised by the communist leadership). No twentieth century marxist state ever got near the freedom which Marx was seeking. A liberal society might achieve it!
24. Political Theory / D. Ideologies / 11. Capitalism
The handmill gives feudalism, the steam mill capitalism [Marx]
     Full Idea: The handmill gives you society with the feudal lord; the steam mill society with the industrial capitalist.
     From: Karl Marx (The Poverty of Philosophy [1847], p.202), quoted by Peter Singer - Marx 7
     A reaction: If technology dictates social structure, then feudalism is still with us, in low-tech industries. What if the steam mill had been invented in 1300?
Capitalism changes the world, by socialising the idea of a commodity [Marx, by Bowie]
     Full Idea: In Marx's view the essential factor in capitalism is that the encroachment of the commodity form into society fundamentally changes the world.
     From: report of Karl Marx (works [1860]) by Andrew Bowie - Introduction to German Philosophy 6 'Historical'
     A reaction: The main point is that people and their labour become commodities. Haven't animals always been treated as commodities? Clearly slave were commodities, long before capitalism. Capitalism universalises it?
The essence of capitalism is the subordination of people to things [Marx, by Weil]
     Full Idea: Marx discovered a formula impossible to surpass when he said that the essence of capitalism lies in the subordination of subject to object, of man to thing.
     From: report of Karl Marx (works [1860]) by Simone Weil - Fragments: London 1943 p,155
     A reaction: I find this rather too vague to be a penetrating observation. I would suggest the obliteration of cooperation and community, in favour of competition. Winners and losers.
Marx thought capitalism was partly liberating, and could make labour and ownership more humane [Marx, by Bowie]
     Full Idea: Marx did not disapprove per se of capitalism. New divisions of labour and forms of ownership could transform individuals in modern societies, creating a more humane world with the means capitalism had liberated from feudalism.
     From: report of Karl Marx (works [1860]) by Andrew Bowie - Introduction to German Philosophy 11 'Metaphysics'
     A reaction: I'm guessing this might be early Marx, which has less to say about the 'scientific' inevitably of deep change, and the necessity for revolution. Nowadays we tinker with humane changes at the poorer end, while the rich run rampant.
25. Social Practice / A. Freedoms / 2. Freedom of belief
Bourgeois 'freedom of conscience' just tolerates all sorts of religious intolerance [Marx]
     Full Idea: Bourgeois 'freedom of conscience' is just the toleration of all possible kinds of religious unfreedom of conscience, and the workers' party should endeavour to liberate the conscience from the witchery of religion.
     From: Karl Marx (Critique of the Gotha Program [1875], IV)
     A reaction: We see this in modern 'faith' schools in the UK, which do not seem to be required to live up to the standards of freedom of belief expected in the rest of a liberal society.
25. Social Practice / C. Rights / 1. Basis of Rights
Marxists say liberal rights are confrontational, and liberal equality is a sham [Marx, by Wolff,J]
     Full Idea: For Marx liberal rights are egoistic rights of separation: they encourage each individual to view others as limitations to his or her freedom. ....Liberals set up a sham community of 'equal' citizens.
     From: report of Karl Marx (On the Jewish Question [1844]) by Jonathan Wolff - An Introduction to Political Philosophy (Rev) 4 'Marxist'
     A reaction: The point is that equality in law does not ensure equal treatment in daily life. I suppose a liberal right can be seen as an opt-out clause for some aspect of society.
26. Natural Theory / D. Laws of Nature / 2. Types of Laws
Seven theories in science: mechanics, heat, electricity, quantum, particles, relativity, life [Heisenberg, by PG]
     Full Idea: Science has seven closed systems of concepts and axioms: Newtonian mechanics; the theory of heat; electricity and magnetism; quantum theory; the theory of elementary particles; general relativity; and the theory of organic life.
     From: report of Werner Heisenberg (Physics and Philosophy [1958], 06) by PG - Db (ideas)
     A reaction: [my summary of pp.86-88 and 92] It is interesting to have spelled out that there are number of 'closed' theories, which are only loosely connected to one another. New discoveries launch whole new theories, instead of being subsumed.
27. Natural Reality / A. Classical Physics / 2. Thermodynamics / a. Energy
Energy is that which moves, and is the substance from which everything is made [Heisenberg]
     Full Idea: Energy is the substance from which all elementary particles, all atoms and therefore all things are made, and energy is that which moves.
     From: Werner Heisenberg (Physics and Philosophy [1958], 04)
     A reaction: I'm not sure what energy is, but I like this because it says that nature is fundamentally active. Nothing makes sense without that basic assumption (on which Leibniz continually insists).
Energy is an unchanging substance, having many forms, and causing all change [Heisenberg]
     Full Idea: Energy is a substance, since its total amount does not change. ...Energy can be changed into motion, into heat, into light and into tension. Energy may be called the fundamental cause for all change in the world.
     From: Werner Heisenberg (Physics and Philosophy [1958], 04)
     A reaction: Grandiose stuff. I remain unconvinced that Heisenberg (clever fellow, I'm told) has any idea of what he is talking about.
27. Natural Reality / B. Modern Physics / 2. Electrodynamics / b. Fields
Maxwell introduced real fields, which transferred forces from point to point [Heisenberg]
     Full Idea: In the theory of fields of force one came back to the older idea, that action is transferred from one point to a neighbouring point. ...With Maxwell the fields of force seemed to have acquired the same degree of reality as the body's of Newton's theory.
     From: Werner Heisenberg (Physics and Philosophy [1958], 06)
27. Natural Reality / B. Modern Physics / 2. Electrodynamics / d. Quantum mechanics
Radiation interference needs waves, but radiation photoelectric effects needs particles [Heisenberg]
     Full Idea: How could it be that the same radiation that produces interference patterns, and therefore must consist of waves, also produces the photoelectric effect, and therefore must consist of moving particles.
     From: Werner Heisenberg (Physics and Philosophy [1958], 02)
27. Natural Reality / B. Modern Physics / 4. Standard Model / a. Concept of matter
An atom's stability after collisions needs explaining (which Newton's mechanics can't do) [Heisenberg]
     Full Idea: The first new model of the atom could not explain the most characteristic features of the atom, its enormous stability. No planetary system following the laws of Newton's mechanics would ever go back to its original configuration after a collision.
     From: Werner Heisenberg (Physics and Philosophy [1958], 02)
Position is complementary to velocity or momentum, so the whole system is indeterminate [Heisenberg]
     Full Idea: The knowledge of the position of a particle is complementary to the knowledge of its velocity or momentum. If we know one with high accuracy we cannot know the other with high accuracy; still we must know both for determining the behaviour of the system.
     From: Werner Heisenberg (Physics and Philosophy [1958], 03)
     A reaction: This is the famous Uncertainty Principle, expressed in plain language by the man himself. At this point we lost our grip on the prospects of determining the behaviour of natural systems.
It was formerly assumed that electromagnetic waves could not be a reality in themselves [Heisenberg]
     Full Idea: The idea that electromagnetic waves could be a reality in themselves, independent of any bodies, did at that time not occur to the physicists.
     From: Werner Heisenberg (Physics and Philosophy [1958], 07)
     A reaction: 'At that time' is when they thought the waves must travel through something, called the 'ether'.
27. Natural Reality / C. Space / 4. Substantival Space
So-called 'empty' space is the carrier of geometry and kinematics [Heisenberg]
     Full Idea: From our modern point of view we would say that the empty space between the atoms was not nothing; it was the carrier of geometry and kinematics.
     From: Werner Heisenberg (Physics and Philosophy [1958], 04)
     A reaction: I'm not sure what the 'carrier of geometry and kinematics' means, but it is interesting that he doesn't mention 'fields' (unless they carry the kinematics?)
27. Natural Reality / D. Time / 3. Parts of Time / e. Present moment
In relativity the length of the 'present moment' is relative to distance from the observer [Heisenberg]
     Full Idea: In classical theory we assume past and future are separated by an infinitely short time interval called the present moment. In relativity it is different: future and past are separated by a finite time interval dependent on the distance from the observer.
     From: Werner Heisenberg (Physics and Philosophy [1958], 07)
     A reaction: Not sure I understand this, but it is a revelation to realise that not only is time made relative to observers, but the length of the 'present moment' also becomes relative. The infinitesimal present moment has always bothered me.
29. Religion / D. Religious Issues / 1. Religious Commitment / a. Religious Belief
Religion is the opium of the people, and real happiness requires its abolition [Marx]
     Full Idea: Religion is the opium of the people. The abolition of religion as the illusory happiness of the people is required for their real happiness.
     From: Karl Marx (Contrib to Critique of Hegel's Phil of Right [1844], Intro)
     A reaction: Not being religious myself, I have some sympathy with this ringing clarion-call. However, while opium satisfies an artificial and superficial need, religion certainly seems to speak to something deeper and more central in people.
Religious feeling is social in origin [Marx]
     Full Idea: The "religious sentiment" (discussed by Feuerbach) is itself a social product.
     From: Karl Marx (Theses on Feuerbach [1846], §VII)
     A reaction: Recent brain research has identified a part of the brain which is only active during religious thought and experience. It is easy to produce cynical political accounts of religion, but in its time it was also quite a good scientific account of nature.