Friendship and marriage. The best friend will probably acquire the best wife, because a good marriage is founded on the talent for friendship.

Freedom is the will to be responsible to ourselves.

A friend should be a master at guessing and keeping still.

A good aphorism is too hard for the tooth of time, and is not worn away by all the centuries, although it serves as food for every epoch.

In music, the passions enjoy themselves.

A woman may very well form a friendship with a man, but for this to endure, it must be assisted by a little physical antipathy.

He who fights with monsters might take care lest he thereby become a monster. And if you gaze for long into an abyss, the abyss gazes also into you.

All of life is a dispute over taste and tasting.

Joyous distrust is a sign of health. Everything absolute belongs to pathology.

All philosophy is a form of confession.

All things that are truly great are at first thought impossible.

Fear is the mother of morality.

He who has a why to live for can bear almost any how.

Hope is the worst of evils, for it prolongs the torments of man.

In the mountains of truth you never climb in vain.

It is not a lack of love, but a lack of friendship that makes unhappy marriages.

The thousand mysteries around us would not trouble but interest us, if only we had cheerful, happy hearts.