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All the ideas for 'fragments/reports', 'Against the Professors (six books)' and 'fragments/reports'

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42 ideas

1. Philosophy / B. History of Ideas / 2. Ancient Thought
1542 Diogenes of Apollonia was the last natural scientist [Diogenes of Apollonia, by Simplicius]
2. Reason / A. Nature of Reason / 1. On Reason
1502 Parmenides was much more cautious about accepting ideas than his predecessors [Simplicius on Parmenides]
3. Truth / A. Truth Problems / 5. Truth Bearers
6021 It is only when we say a proposition that we speak truly or falsely [Sext.Empiricus]
5. Theory of Logic / E. Structures of Logic / 1. Logical Form
6020 'Man is a rational mortal animal' is equivalent to 'if something is a man, that thing is a rational mortal animal' [Sext.Empiricus]
7. Existence / A. Nature of Existence / 3. Being / a. Nature of Being
448 No necessity could produce Being either later or earlier, so it must exist absolutely or not at all [Parmenides]
447 Being must be eternal and uncreated, and hence it is timeless [Parmenides]
449 Being is not divisible, since it is all alike [Parmenides]
7. Existence / A. Nature of Existence / 3. Being / d. Non-being
1503 There is no such thing as nothing [Parmenides]
445 The realm of necessary non-existence cannot be explored, because it is unknowable [Parmenides]
7. Existence / A. Nature of Existence / 3. Being / f. Primary being
21820 Parmenides at least saw Being as the same as Nous, and separate from the sensed realm [Parmenides, by Plotinus]
7. Existence / B. Change in Existence / 1. Nature of Change
452 All our concepts of change and permanence are just names, not the truth [Parmenides]
9. Objects / E. Objects over Time / 1. Objects over Time
1504 Something must be unchanging to make recognition and knowledge possible [Aristotle on Parmenides]
9. Objects / F. Identity among Objects / 7. Indiscernible Objects
489 Each thing must be in some way unique [Diogenes of Apollonia]
10. Modality / A. Necessity / 5. Metaphysical Necessity
444 The first way of enquiry involves necessary existence [Parmenides]
10. Modality / A. Necessity / 8. Transcendental Necessity
450 Necessity sets limits on being, in order to give it identity [Parmenides]
11. Knowledge Aims / B. Certain Knowledge / 4. The Cogito
451 Thinking implies existence, because thinking depends on it [Parmenides]
12. Knowledge Sources / A. A Priori Knowledge / 2. Self-Evidence
483 Start a thesis with something undisputable [Diogenes of Apollonia]
12. Knowledge Sources / B. Perception / 1. Perception
1506 Parmenides treats perception and intellectual activity as the same [Theophrastus on Parmenides]
12. Knowledge Sources / B. Perception / 6. Inference in Perception
1544 Perception must be an internal matter, because we can fail to perceive when we are preoccupied [Diogenes of Apollonia, by Theophrastus]
12. Knowledge Sources / C. Rationalism / 1. Rationalism
3058 Only reason can prove the truth of facts [Parmenides]
14. Science / A. Basis of Science / 1. Observation
6026 How can you investigate without some preconception of your object? [Sext.Empiricus]
17. Mind and Body / E. Mind as Physical / 1. Physical Mind
24042 The older Diogenes said the soul is air, made of the smallest particles [Diogenes of Apollonia]
23. Ethics / B. Contract Ethics / 9. Contractualism
6032 Right actions, once done, are those with a reasonable justification [Sext.Empiricus]
26. Natural Theory / A. Speculations on Nature / 2. Natural Purpose / a. Final purpose
5995 Diogenes of Apollonia offered the first teleological account of cosmology [Diogenes of Apollonia, by Robinson,TM]
26. Natural Theory / A. Speculations on Nature / 4. Mathematical Nature
1517 The tektraktys (1+2+3+4=10) is the 'fount of ever-flowing nature' [Sext.Empiricus]
26. Natural Theory / A. Speculations on Nature / 6. Early Matter Theories / c. Ultimate substances
488 Air is divine, because it is in and around everything, and arranges everything [Diogenes of Apollonia]
484 Everything is ultimately a variation of one underlying thing [Diogenes of Apollonia]
26. Natural Theory / A. Speculations on Nature / 6. Early Matter Theories / e. The One
555 People who say that the cosmos is one forget that they must explain movement [Aristotle on Parmenides]
5081 There could be movement within one thing, as there is within water [Aristotle on Parmenides]
1509 The one can't be divisible, because if it was it could be infinitely divided down to nothing [Parmenides, by Simplicius]
20900 Defenders of the One say motion needs the void - but that is not part of Being [Parmenides, by Aristotle]
226 The one is without any kind of motion [Parmenides]
1505 Reason sees reality as one, the senses see it as many [Aristotle on Parmenides]
453 Reality is symmetrical and balanced, like a sphere, with no reason to be greater one way rather than another [Parmenides]
26. Natural Theory / A. Speculations on Nature / 6. Early Matter Theories / f. Ancient elements
1792 He taught that there are two elements, fire the maker, and earth the matter [Parmenides, by Diog. Laertius]
486 Plants and animals can only come into existence if something fixes their species [Diogenes of Apollonia]
485 Things must retain their essential nature during change, or mixing would be impossible [Diogenes of Apollonia]
27. Natural Reality / A. Classical Physics / 1. Mechanics / a. Explaining movement
5115 It is feeble-minded to look for explanations of everything being at rest [Aristotle on Parmenides]
27. Natural Reality / C. Space / 1. Void
13217 The void can't exist, and without the void there can't be movement or separation [Parmenides, by Aristotle]
27. Natural Reality / D. Time / 3. Parts of Time / a. Beginning of time
22918 What could have triggered the beginning [of time and being]? [Parmenides]
27. Natural Reality / E. Cosmology / 1. Cosmology
1791 He was the first person to say the earth is spherical [Parmenides, by Diog. Laertius]
1794 He was the first to discover the identity of the Morning and Evening Stars [Parmenides, by Diog. Laertius]