The secret of realizing the greatest fruitfulness and the greatest enjoyment of existence is: to live dangerously! Build your cities on the slopes of Vesuvius!
If you know the why, you can live anyhow.
Whoever fights monsters should see that in the process he does not become a monster. And when you look long into an abyss, the abyss also looks into you.
`Faith` means not wanting to know what is true.
Insanity in individuals is something rare - but in groups, parties, nations, and epochs it is the rule.
That which does not kill us makes us stronger.
Without music life would be a mistake.
What was silent in the father speaks in the son, and often I found in the son the unveiled secret of the father.
Great intellects are skeptical.