1. “The unexamined life is not worth living.”
2. “Know thyself.”
3. “Virtue is knowledge.”
4. “It is the mark of an educated mind to be able to entertain a thought without accepting it.”
5. “Are you going to spend your whole life avoiding the things you fear most?”
6. “If I we are wrong about something, tell me, and I shall retrench.”
7. “I never think exactly as others do; if I did, it’s doubtful I should be thought so clever.”
8. “All men have knowledge, but not all are learned men.”
9. “The only true wisdom is in knowing you don’t know.”
10. “Silence is better than a foolish utterance.”
11. “Doubt is the beginning of wisdom.”
12. “We suffer more often in imagination than in reality.”
13. “The unreflective life is not worth living.”
14. “Wisdom is not the sole pursuit of truth; it is the art of seeing light.”
15. “The nicest thing one can do is to show some compassion to a fellow creature.”
16. “Nothing ventured, nothing gained.” (Often attributed to Socrates)

17. “The life which is not lived for others is not worth living.”
18. “It is possible to have the answer without knowing the question.”
19. “We are such stuff as dreams are made on, and our little life is rounded with a sleep.”
20. “To engage in the process of inquiry is to be a human being.”
21. “The fear of death is the fear of ceasing to be.”
22. “The greatest virtue is humility.”
23. “Don’t ask about things you can understand, but ask about things you don’t understand.”
24. “A life unexamined does not deserve to be lived.”
25. “The unexamined life is not worth living.”