Great indebtedness does not make men grateful, but vengeful; and if a little charity is not forgotten, it turns into a gnawing worm.

He who bestows something great receives no gratitude; for in accepting it the recipient has already been weighed down too much.

How much truth does a spirit endure, how much truth does it dare?

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

He who would learn to fly one day must first learn to stand and walk and run and climb and dance; one cannot fly into flying.

If you look long enough into the void, the void begins to look back through you.

Every philosophy is the philosophy of some stage of life.