True teachers are those who use themselves as bridges over which they invite their students to cross; then, having facilitated their crossing, joyfully collapse, encouraging them to create their own.

Every man has his folly, but the greatest folly of all … is not to have one.

Yes, there is weeping, even in heaven, but it is for those who are still crawling on the earth.

I believe I'm a caterpillar buried deep down under the ground. The entire earth is above me, crushing me and I begin to bore through the soil, making a passage to the surface so that I can penetrate the crust and issue into the light. It's hard work boring through the entire earth, but I'm able to be patient because I have a strong premonition that as soon as I do issue into the light I shall become a butterfly.

What is truth? What is falsehood? Whatever gives wings to men, whatever produces great works and great souls and lifts up a man's height above the earth - that's true. Whatever clips off man's wings - that's false.

Everything in this world has a hidden meaning.

Be always restless, unsatisfied, unconforming. Whenever a habit becomes convenient, smash it! The greatest sin of all is satisfaction.