1. “The unexamined life is not worth living.”

2. “Be kind, for everyone you meet is fighting a hard battle.”

3. “At the touch of love everyone becomes a poet.”

4. “Courage is knowing what not to fear.”

5. “Wise men speak because they have something to say; Fools because they have to say something.”

6. “There is no harm in repeating a good thing.”

7. “The beginning is the most important part of the work.”

8. “We can easily forgive a child who is afraid of the dark; the real tragedy of life is when men are afraid of the light.”

9. “A good decision is based on knowledge and not on numbers.”

10. “The first and greatest victory is to conquer yourself.”

11. “The heaviest penalty for declining to rule is to be ruled by someone inferior to yourself.”

12. “Ignorance, the root and stem of every evil.”

13. “One of the penalties for refusing to participate in politics is that you end up being governed by your inferiors.”

14. “The only true wisdom is in knowing you know nothing.”

15. “Music gives a soul to the universe, wings to the mind, flight to the imagination, and life to everything.”

16. “Necessity is the mother of invention.”

17. “Wealth is the parent of luxury and indolence, and poverty of meanness and viciousness, and both of discontent.”

18. “Only the dead have seen the end of war.”

19. “Love is a serious mental disease.”

20. “Good people do not need laws to tell them to act responsibly, while bad people will find a way around the laws.”