Combining Philosophers

Ideas for Aristotle, Chrysippus and Eric R. Scerri

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73 ideas

27. Natural Reality / A. Classical Physics / 1. Mechanics / a. Explaining movement
20063 Motion fulfils potentiality [Aristotle]
1739 If all movement is either pushing or pulling, there must be a still point in between where it all starts [Aristotle]
5114 If movement can arise within an animal, why can't it also arise in the universe? [Aristotle]
5116 When there is unnatural movement (e.g. fire going downwards) the cause is obvious [Aristotle]
399 If the more you raise some earth the faster it moves, why does the whole earth not move? [Aristotle]
24044 Movement can be intrinsic (like a ship) or relative (like its sailors) [Aristotle]
24045 Movement is spatial, alteration, withering or growth [Aristotle]
1738 Practical reason is based on desire, so desire must be the ultimate producer of movement [Aristotle]
27. Natural Reality / A. Classical Physics / 1. Mechanics / b. Laws of motion
24064 If something is pushed, it pushes back [Aristotle]
27. Natural Reality / A. Classical Physics / 2. Thermodynamics / d. Entropy
1696 Change goes from possession to loss (as in baldness), but not the other way round [Aristotle]
27. Natural Reality / B. Modern Physics / 4. Standard Model / a. Concept of matter
17411 If all elements are multiples of one (of hydrogen), that suggests once again that matter is unified [Scerri]
17420 The stability of nuclei can be estimated through their binding energy [Scerri]
27. Natural Reality / C. Space / 1. Void
20918 Void is a kind of place, so it can't explain place [Aristotle]
27. Natural Reality / C. Space / 4. Substantival Space
5099 The universe as a whole is not anywhere [Aristotle]
5097 If everything has a place, this causes an infinite regress, because each place must have place [Aristotle]
27. Natural Reality / C. Space / 5. Relational Space
5098 Place is not shape, or matter, or extension between limits; it is the limits of a body [Aristotle]
27. Natural Reality / D. Time / 1. Nature of Time / b. Relative time
13228 There is no time without movement [Aristotle]
20920 If there were many cosmoses, each would have its own time, giving many times [Aristotle]
27. Natural Reality / D. Time / 1. Nature of Time / c. Idealist time
5106 Would there be time if there were no mind? [Aristotle]
22967 It is unclear whether time depends on the existence of soul [Aristotle]
27. Natural Reality / D. Time / 1. Nature of Time / d. Time as measure
8590 Time does not exist without change [Aristotle]
22965 Time measures rest, as well as change [Aristotle]
22885 For Aristotle time is not a process but a means for measuring processes [Aristotle, by Bardon]
22959 Time is not change, but the number we associate with change [Aristotle]
22964 Change only exists in time through its being temporally measure [Aristotle]
5104 Time is an aspect of change [Aristotle]
27. Natural Reality / D. Time / 1. Nature of Time / g. Growing block
1702 Things may be necessary once they occur, but not be unconditionally necessary [Aristotle]
27. Natural Reality / D. Time / 1. Nature of Time / h. Presentism
20819 The past and the future subsist, but only the present exists [Chrysippus, by Plutarch]
27. Natural Reality / D. Time / 1. Nature of Time / i. Denying time
22956 How can time exist, when it is composed of what has ceased to be and is yet to be? [Aristotle]
5102 If all of time has either ceased to exist, or has not yet happened, maybe time does not exist [Aristotle]
27. Natural Reality / D. Time / 2. Passage of Time / a. Experience of time
5103 Time is not change, but requires change in our minds to be noticed [Aristotle]
27. Natural Reality / D. Time / 2. Passage of Time / e. Tensed (A) series
22961 The present moment is obviously a necessary feature of time [Aristotle]
27. Natural Reality / D. Time / 2. Passage of Time / h. Change in time
22916 Unlike time, change goes at different rates, and is usually localised [Aristotle, by Le Poidevin]
27. Natural Reality / D. Time / 3. Parts of Time / a. Beginning of time
617 It is hard to see how either time or movement could come into existence or be destroyed [Aristotle]
27. Natural Reality / D. Time / 3. Parts of Time / b. Instants
16693 Time has parts, but the now is not one of them, and time is not composed of nows [Aristotle]
22958 Nows can't be linked together, any more than points on a line [Aristotle]
27. Natural Reality / D. Time / 3. Parts of Time / d. Measuring time
22968 Circular motion is the most obvious measure of time, and especially the celestial sphere [Aristotle]
22963 We measure change by time, and time by change, as they are interdefined [Aristotle]
27. Natural Reality / D. Time / 3. Parts of Time / e. Present moment
22966 The present moment is a link (of past to future), and also a limit (of past and of future) [Aristotle]
22957 We can't tell whether the changing present moment is one thing, or a succession of things [Aristotle]
20818 The present does not exist, so our immediate experience is actually part past and part future [Chrysippus, by Plutarch]
20821 Time is continous and infinitely divisible, so there cannot be a wholly present time [Chrysippus, by Stobaeus]
27. Natural Reality / E. Cosmology / 1. Cosmology
402 The Earth must be spherical, because it casts a convex shadow on the moon [Aristotle]
403 The earth must be round and of limited size, because moving north or south makes different stars visible [Aristotle]
27. Natural Reality / E. Cosmology / 2. Eternal Universe
5083 Do things come to be from what is, or from what is not? Both seem problematical. [Aristotle]
16595 If each thing can cease to be, why hasn't absolutely everything ceased to be long ago? [Aristotle]
27. Natural Reality / E. Cosmology / 3. The Beginning
613 Even if the world is caused by fate, mind and nature are still prior causes [Aristotle]
619 Something which both moves and is moved is intermediate, so it follows that there must be an unmoved mover [Aristotle]
1498 Everyone agrees that the world had a beginning, but thinkers disagree over whether it will end [Aristotle]
620 The first mover is necessary, and because it is necessary it is good [Aristotle]
27. Natural Reality / E. Cosmology / 10. Multiverse
395 It seems possible that there exists a limited number of other worlds apart from this one [Aristotle]
27. Natural Reality / F. Chemistry / 1. Chemistry
17392 How can poisonous elements survive in the nutritious compound they compose? [Scerri]
17391 Periodicity and bonding are the two big ideas in chemistry [Scerri]
17404 Chemistry does not work from general principles, but by careful induction from large amounts of data [Scerri]
17407 The electron is the main source of chemical properties [Scerri]
17415 A big chemistry idea is that covalent bonds are shared electrons, not transfer of electrons [Scerri]
17409 Does radioactivity show that only physics can explain chemistry? [Scerri]
27. Natural Reality / F. Chemistry / 2. Modern Elements
17418 It is now thought that all the elements have literally evolved from hydrogen [Scerri]
17398 19th C views said elements survived abstractly in compounds, but also as 'material ingredients' [Scerri]
27. Natural Reality / F. Chemistry / 3. Periodic Table
17395 Elements were ordered by equivalent weight; later by atomic weight; finally by atomic number [Scerri]
17406 Moseley, using X-rays, showed that atomic number ordered better than atomic weight [Scerri]
17408 Some suggested basing the new periodic table on isotopes, not elements [Scerri]
17413 Elements in the table are grouped by having the same number of outer-shell electrons [Scerri]
17416 Orthodoxy says the periodic table is explained by quantum mechanics [Scerri]
17417 To explain the table, quantum mechanics still needs to explain order of shell filling [Scerri]
17419 Since 99.96% of the universe is hydrogen and helium, the periodic table hardly matters [Scerri]
17414 Pauli explained the electron shells, but not the lengths of the periods in the table [Scerri]
17410 Moseley showed the elements progress in units, and thereby clearly identified the gaps [Scerri]
17412 Elements are placed in the table by the number of positive charges - the atomic number [Scerri]
17422 The best classification needs the deepest and most general principles of the atoms [Scerri]
27. Natural Reality / G. Biology / 2. Life
24063 What is born has growth, a prime, and a withering away [Aristotle]
23302 Plants have far less life than animals, but more life than other corporeal entities [Aristotle]
27. Natural Reality / G. Biology / 3. Evolution
23301 There is a gradual proceeding from the inanimate to animals, with no clear borderlines [Aristotle]