Ideas from 'Against the Professors (six books)' by Sextus Empiricus [180], by Theme Structure
[found in 'Against the Professors' by Sextus Empiricus (ed/tr Bury,R.G.) [Harvard Loeb 1949,978-0-674-99420-1]].
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3. Truth / A. Truth Problems / 5. Truth Bearers
6021
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It is only when we say a proposition that we speak truly or falsely
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5. Theory of Logic / E. Structures of Logic / 1. Logical Form
6020
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'Man is a rational mortal animal' is equivalent to 'if something is a man, that thing is a rational mortal animal'
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14. Science / A. Basis of Science / 1. Observation
6026
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How can you investigate without some preconception of your object?
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23. Ethics / B. Contract Ethics / 9. Contractualism
6032
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Right actions, once done, are those with a reasonable justification
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26. Natural Theory / A. Speculations on Nature / 4. Mathematical Nature
1517
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The tektraktys (1+2+3+4=10) is the 'fount of ever-flowing nature'
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