For believe me: the secret for harvesting from existence the greatest fruitfulness and greatest enjoyment is – to live dangerously.
The most perfidious way of harming a cause consists of defending it deliberately with faulty arguments.
The Christian resolution to find the world ugly and bad has made the world ugly and bad.
Morality is herd instinct in the individual.
There is only one thing in the world worse than being talked about, and that is not being talked about.
God is dead.
A thinker sees his own actions as experiments and questions–as attempts to find out something. Success and failure are for him answers above all.
The man of knowledge must be able not only to love his enemies but also to hate his friends.