Friedrich Nietzsche

Many a man fails as an original thinker simply because his memory is too good.

There are two things a real man likes - danger and play. And he likes women because she is the most dangerous of playthings.

He who fights with monsters might take care lest he thereby become a monster.

Morality is the herd-instinct in the individual.

Where there is the tree of knowledge, there is always Paradise: so say the most ancient and most modern serpents.

Whoever battles with monsters had better see that it does not turn him into a monster. And if you gaze long into an abyss, the abyss will gaze back into you.

Liberal institutions straightway cease from 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.

The most common lie is that which one lies to himself; lying to others is relatively an exception.

Life always gets harder toward the summit - the cold increases, responsibility increases.

No one is such a liar as the indignant man.