Mistakes are great, the more I make the smarter I get.

It is one of our most exciting discoveries that local discovery leads to a complex of further discoveries.

It is essential that anyone reading this book know at the outset that the author is apolitical. I was convinced in 1927 that humanity's most fundamental survival problems could never be solved by politics.

I'm not trying to counsel any of you to do anything really special except dare to think. And to dare to go with the truth. And to dare to really love completely.

We must do away with the absolutely specious notion that everybody has to earn a living.

Don't change the man. Change his environment.

Bite your tongue. Get a cinder in your eye. When you feel good, you feel nothing.