21 ideas
14052 | Begin philosophy when you are young, and keep going when you are old [Epicurus] |
Full Idea: Let no one delay the study of philosophy while young nor weary of it when old; for no one is either too young or too old for the health of the soul. | |
From: Epicurus (Letter to Menoeceus [c.291 BCE], 122) | |
A reaction: I agree with this on both accounts. I think the correct age to begin the study of philosophy is four, and it is vital to continue its study up to the point where you can no longer remember your own name. 'Health of the soul' sounds right too. |
11211 | If a sound conclusion comes from two errors that cancel out, the path of the argument must matter [Rumfitt] |
Full Idea: If a designated conclusion follows from the premisses, but the argument involves two howlers which cancel each other out, then the moral is that the path an argument takes from premisses to conclusion does matter to its logical evaluation. | |
From: Ian Rumfitt ("Yes" and "No" [2000], II) | |
A reaction: The drift of this is that our view of logic should be a little closer to the reasoning of ordinary language, and we should rely a little less on purely formal accounts. |
11210 | Standardly 'and' and 'but' are held to have the same sense by having the same truth table [Rumfitt] |
Full Idea: If 'and' and 'but' really are alike in sense, in what might that likeness consist? Some philosophers of classical logic will reply that they share a sense by virtue of sharing a truth table. | |
From: Ian Rumfitt ("Yes" and "No" [2000]) | |
A reaction: This is the standard view which Rumfitt sets out to challenge. |
11212 | The sense of a connective comes from primitively obvious rules of inference [Rumfitt] |
Full Idea: A connective will possess the sense that it has by virtue of its competent users' finding certain rules of inference involving it to be primitively obvious. | |
From: Ian Rumfitt ("Yes" and "No" [2000], III) | |
A reaction: Rumfitt cites Peacocke as endorsing this view, which characterises the logical connectives by their rules of usage rather than by their pure semantic value. |
18801 | Classical negation is circular, if it relies on knowing negation-conditions from truth-conditions [Dummett] |
Full Idea: Explanations of classical negation assume that knowing what it is for the truth-condition of some statement to obtain, independently of recognising it to obtain, we thereby know what it is for it NOT to obtain; but this presupposes classical negation. | |
From: Michael Dummett (The Logical Basis of Metaphysics [1991], p.299), quoted by Ian Rumfitt - The Boundary Stones of Thought 1.1 | |
A reaction: [compressed wording] This is Dummett explaining why he prefers intuitionistic logic, with its doubts about double negation. |
14062 | Sooner follow mythology, than accept the 'fate' of natural philosophers [Epicurus] |
Full Idea: It would be better to follow the stories told about the gods than to be a slave to the fate of the natural philosophers. | |
From: Epicurus (Letter to Menoeceus [c.291 BCE], 134) | |
A reaction: At this point in history there is a blurring between autonomous decisions and what we now call free will, and also between fate and determinism, which we try to keep distinct. |
1837 | We should not refer things to irresponsible necessity, but either to fortune or to our own will [Epicurus] |
Full Idea: The best men have no belief in necessity (set up by some as mistress of all), but refer some things to fortune, some to ourselves, because necessity is irresponsible, and fortune is unstable, while our own will is free. | |
From: Epicurus (Letter to Menoeceus [c.291 BCE], 133), quoted by Diogenes Laertius - Lives of Eminent Philosophers 10.27 |
11214 | We learn 'not' along with affirmation, by learning to either affirm or deny a sentence [Rumfitt] |
Full Idea: The standard view is that affirming not-A is more complex than affirming the atomic sentence A itself, with the latter determining its sense. But we could learn 'not' directly, by learning at once how to either affirm A or reject A. | |
From: Ian Rumfitt ("Yes" and "No" [2000], IV) | |
A reaction: [compressed] This seems fairly anti-Fregean in spirit, because it looks at the psychology of how we learn 'not' as a way of clarifying what we mean by it, rather than just looking at its logical behaviour (and thus giving it a secondary role). |
1836 | Prudence is more valuable than philosophy, because it avoids confusions of the soul [Epicurus] |
Full Idea: The greatest good in avoiding confusion of the soul is prudence [phronesis], on which account prudence is something more valuable than even philosophy. | |
From: Epicurus (Letter to Menoeceus [c.291 BCE], 132), quoted by Diogenes Laertius - Lives of Eminent Philosophers 10.27 |
14061 | Our own choices are autonomous, and the basis for praise and blame [Epicurus] |
Full Idea: What occurs by our own agency is autonomous, and it is to this that praise and blame are attached. | |
From: Epicurus (Letter to Menoeceus [c.291 BCE], 133) | |
A reaction: I don't think this should be understand as an assertion of free will in the modern sense. The 'swerve' of the atoms just means that decisions can arise out of us - not that they are somehow outside of nature. |
14054 | Fearing death is absurd, because we are not present when it occurs [Epicurus] |
Full Idea: Death, the most frightening of bad things, is nothing to us; since when we exist, death is not yet present, and when death is present, then we do not exist. | |
From: Epicurus (Letter to Menoeceus [c.291 BCE], 125) | |
A reaction: This is a fairly accurate observation. To fear not being in this life is a bit like fearing not being in Vancouver next Tuesday. It also involves the paradox of the present moment. E.g. Idea 1904. |
14053 | It is absurd to fear the pain of death when you are not even facing it [Epicurus] |
Full Idea: He is a fool who says that he fears death not because it will be painful when present but because it is painful when it is still to come. | |
From: Epicurus (Letter to Menoeceus [c.291 BCE], 125) | |
A reaction: Not very plausible, I'm afraid. It provides a good argument in favour of smoking, if the lung cancer is far in the future. Paralysing fear is daft, but some remote fears should be heeded. |
14055 | The wisdom that produces a good life also produces a good death [Epicurus] |
Full Idea: The same kind of practice produces a good life and a good death. | |
From: Epicurus (Letter to Menoeceus [c.291 BCE], 126) | |
A reaction: This is the kind of old fashioned observation which we would do well to hang on to. The ideal of dying well has vanished from our culture. |
14057 | All pleasures are good, but it is not always right to choose them [Epicurus] |
Full Idea: Every pleasure is a good thing, since it has a nature congenial to us, but not every one is to be chosen, just as every pain is a bad thing, but not every one is such as to be always avoided. | |
From: Epicurus (Letter to Menoeceus [c.291 BCE], 129) | |
A reaction: This kind of sensible remark would be wholly endorsed by Bentham and Mill. This fits in with the excellent distinction between what is right and what is good. |
14058 | Pleasure is the goal, but as lack of pain and calm mind, not as depraved or greedy pleasure [Epicurus] |
Full Idea: When we say that pleasure is the goal we do not mean the pleasures of the profligate or the pleasures of consumption, but rather the lack of pain in the body and disturbance in the soul. | |
From: Epicurus (Letter to Menoeceus [c.291 BCE], 131) | |
A reaction: I don't really understand the aspiration to a 'calm mind'. No one likes stress, but total calmness sounds close to non-existence. The mean! There is no achievement without pain. |
1833 | Pleasure is the first good in life [Epicurus] |
Full Idea: Pleasure is the beginning and end of living happily, and we recognise this as the first good. | |
From: Epicurus (Letter to Menoeceus [c.291 BCE], 128) | |
A reaction: We might enquire what we would live for if our capacities for pleasure were surgically removed. Would we still experience intellectual curiosity, or an aspiration to some cold and remote goodness? |
14063 | Sooner a good decision going wrong, than a bad one turning out for the good [Epicurus] |
Full Idea: It is better for a good decision not to turn out right in action than for a bad decision to turn out right because of chance. | |
From: Epicurus (Letter to Menoeceus [c.291 BCE], 135) | |
A reaction: This sounds right, and on the whole the law agrees. Notice that what we need is a 'good decision', and not just to 'mean well'. The well-meaning fool is wicked. I am opposed to consequentialism, and agree with this idea. |
14059 | The best life is not sensuality, but rational choice and healthy opinion [Epicurus] |
Full Idea: It is not drinking bouts or enjoying boys and women or consuming fish which produces the pleasant life, but sober calculation which searches out reasons for every choice, and drives out opinions which produce turmoil of the soul. | |
From: Epicurus (Letter to Menoeceus [c.291 BCE], 132) | |
A reaction: This more or less sums up what I would call the philosophical life. Spontaneity is good, and some pleasures are killed by excessive thought, but on the whole actions are always better if good reasons are found, and error brings chaos. |
1835 | True pleasure is not debauchery, but freedom from physical and mental pain [Epicurus] |
Full Idea: When we say that pleasure is the chief good, we do not mean debauchery, but freedom of the body from pain, and of the soul from confusion…. which requires sober contemplation. | |
From: Epicurus (Letter to Menoeceus [c.291 BCE], 131), quoted by Diogenes Laertius - Lives of Eminent Philosophers 10.27 | |
A reaction: I'm not clear how lack of pain and confusion counts as pleasure. Also the concepts of debauchery held by the puritan and the sybarite are wildly different. |
14056 | We only need pleasure when we have the pain of desire [Epicurus] |
Full Idea: We are in need of pleasure only when we are in pain because of the absence of pleasure, and when we are not in pain, then we no longer need pleasure. | |
From: Epicurus (Letter to Menoeceus [c.291 BCE], 128) | |
A reaction: This Buddhist aspiration to eliminate desire has no appeal for me. It just sounds like a recipe for boredom, and an aversion to risk-taking. Start by asking what is best in life; it inevitably involves pleasure of some sort. Anyway, desire isn't painful. |
14060 | Prudence is the greatest good, and more valuable than philosophy, because it produces virtue [Epicurus] |
Full Idea: Prudence is the principle of the rational life and is the greatest good. That is why prudence is more valuable than philosophy, for prudence is the source of all the other virtues. | |
From: Epicurus (Letter to Menoeceus [c.291 BCE], 132) | |
A reaction: ['prudence' will be Greek 'phronesis']The interest of this is that it is almost copied straight out of Aristotle's Ethics. Epicurus was an opponent of the Peripatetics, but greatly influenced by them. |