Only the most acute and active animals are capable of boredom.

We, however, want to become those we are--human beings who are new, unique, incomparable, who give themselves laws, who create themselves. To that end we must become the best learners and discoverers of everything that is lawful and necessary in the world: we must become physicists in order to be able to be creators in this sense--while hitherto all valuations and ideals have been based on ignorance of physics or were constructed so as to contradict it. Therefore: long live physics! And even more so that which compels us to turn to physics--our honesty!

We evaluate the services that anyone renders to us according to the value he puts on them, not according to the value they have for us.

The true man wants two things: danger and play. For that reason he wants woman, as the most dangerous plaything.

Pity makes suffering contagious.

One must renounce the bad taste of wishing to agree with many people.

Liberal institutions straightway cease being liberal the moment they are soundly established: Once this is attained, no more grievous and more thorough enemies of freedom exist than liberal institutions.