There is a stupid humility that is quite common and when a person is afflicted with it, he is once and for all disqualified for being a disciple of knowledge.

I love him who is of a free spirit and a free heart: thus is his head only the bowels of his heart; his heart, however, causeth his down-going.

When you look into an abyss, the abyss also looks into you.

Philosophical systems are wholly true for their founders only.

Full is the earth of the superfluous; marred is life by the many-too-many. May they be decoyed out of this life by the "life eternal"!

The greater the obstacle the more glory in overcoming it. - What does not destroy makes me stronger.

The philosopher believes that the value of his philosophy lies in the whole, in the building: posterity discovers it in the bricks with which he built and which are then often used again for better building: in the fact, that is to say, that building can be destroyed and nonetheless possess value as material.