All I need is a sheet of paper and something to write with, and then I can turn the world upside down.

A casual stroll through the lunatic asylum shows that faith does not prove anything.

To learn to see- to accustom the eye to calmness, to patience, and to allow things to come up to it; to defer judgment, and to acquire the habit of approaching and grasping an individual case from all sides. This is the first preparatory schooling of intellectuality. One must not respond immediately to a stimulus; one must acquire a command of the obstructing and isolating instincts.

A very popular error: having the courage of one's convictions; rather it is a matter of having the courage for an attack on one's convictions.

One can also be undignified and flattering toward a virtue.

Remain true to the earth.

The mouth may lie, alright, but the face it makes nonetheless tells the truth.