1. “A free spirit takes liberties even with liberty itself.”
2. “Only useless things are indispensable.”
3. “Knowledge is ancient error reflecting on its youth.”
4. “The world is divided into two categories: failures and unknowns.”
5. “Pain has its reasons, pleasure is totally indifferent.”
6. “Knowledge is ancient error reflecting on its youth.”
7. “Maybe men are separated from each other by the degree of their misery.”
8. “If you want to have clean ideas, change them as often as your shirt.”
9. “The only way to win is to fight on the side of your adversaries.”
10. “The essence of a man is found in his faults.”