Live so that thou mayest desire to live again - that is thy duty - for in any case thou wilt live again!

Tolerance is a proof of distrust in one's own ideals.

How far is truth susceptible of embodiment? That is the question, that is the experiment.

Genuine historical knowledge requires nobility of character, a profound understanding of human existence - not detachment and objectivity.

A friend whose hopes we cannot satisfy is a friend we would rather have as an enemy.

Here the ways of men divide. If you wish to strive for peace of soul and happiness, then believe; if you wish to be a disciple of truth, then inquire.

There is always some madness in love.