1. **The greatest happiness is to know the source of unhappiness.**
2. **What does not kill me makes me stronger.**
3. **He who fights with monsters should be careful lest he become a monster. And if you gaze long into an abyss, the abyss gazes back into you.**
4. **All things are subject to interpretation. Whichever interpretation prevails at a given time is a function of power.**
5. **There are no facts, only interpretations.**
6. **The only thing that is constant is change.**
7. **God is dead.**
8. **Morality is the herd instinct in the individual.**
9. **What is done out of love always takes place beyond good and evil.**
10. **Man is the measure of all things.**
11. **The will to power is the basic drive of all life.**
12. **Life is a river that flows ever onward.**
13. **The future is something that arrives unexpectedly.**
14. **The past is a foreign country. They do things differently there.**
15. **The only way to deal with an unfree world is to become so absolutely free that your very existence is an act of rebellion.**
16. **The only thing that matters is the present moment.**
17. **The greatest power is the power to be yourself.**
18. **The only person you are destined to become is the person you decide to be.**
19. **You are not a drop in the ocean. You are the entire ocean in a drop.**
20. **There is no such thing as a free lunch.**
21. **Everything is a lie except the eternal return of the same.**
22. **The only thing that is worth doing is what we do for no reason.**
23. **We have art so that we shall not die of truth.**
24. **The only way to get rid of a temptation is to yield to it.**
25. **Man is a rope, tied between the animal and the Superman – a rope over an abyss.**
26. **What is great in man is that he is a bridge and not a goal.**
27. **He who has a why to live can bear almost any how.**
28. **One must still have chaos in oneself to be able to give birth to a dancing star.**
29. **Beware that, when fighting monsters, you yourself do not become a monster.**
30. **And if you gaze long into an abyss, the abyss gazes back into you.**