Most of my advances were by mistake. You uncover what is when you get rid of what isn't.

The most important thing about Spaceship Earth - an instruction book didn't come with it.

If you are the master be sometimes blind, if you are the servant be sometimes deaf.

There is nothing in a caterpillar that tells you it's going to be a butterfly.

What usually happens in the educational process is that the faculties are dulled, overloaded, stuffed and paralyzed so that by the time most people are mature they have lost their innate capabilities.

Ninety-nine percent of who you are is invisible and untouchable.