Ideas from 'Protagoras' by Plato [380 BCE], by Theme Structure

[found in 'Complete Works' by Plato (ed/tr Cooper,John M.) [Hackett 1997,0-87220-349-2]].

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2. Reason / B. Laws of Thought / 4. Contraries
Only one thing can be contrary to something
8. Modes of Existence / D. Universals / 6. Platonic Forms / c. Self-predication
If asked whether justice itself is just or unjust, you would have to say that it is just
11. Knowledge Aims / A. Knowledge / 3. Value of Knowledge
The only real evil is loss of knowledge
The most important things in life are wisdom and knowledge
15. Nature of Minds / C. Capacities of Minds / 7. Seeing Resemblance
Everything resembles everything else up to a point
20. Action / B. Motives for Action / 3. Acting on Reason / b. Intellectualism
Courage is knowing what should or shouldn't be feared
No one willingly and knowingly embraces evil
22. Metaethics / A. Ethical Ends / 2. Goodness / a. Goodness
Some things are good even though they are not beneficial to men
22. Metaethics / A. Ethical Ends / 6. Pleasure / b. Value of pleasure
Some pleasures are not good, and some pains are not evil
People tend only to disapprove of pleasure if it leads to pain, or prevents future pleasure
23. Ethics / C. Virtue Theory / 2. Elements of Virtue Theory / d. Teaching virtue
Socrates did not believe that virtue could be taught
If we punish wrong-doers, it shows that we believe virtue can be taught
Protagoras contradicts himself by saying virtue is teachable, but then that it is not knowledge
Socrates is contradicting himself in claiming virtue can't be taught, but that it is knowledge