The natural desire of good men is knowledge.

Every man at three years old is half his height

Principles for the Development of a Complete Mind: Study the science of art. Study the art of science. Develop your senses- especially learn how to see. Realize that everything connects to everything else.

Just as a well-filled day brings blessed sleep, so a well-employed life brings a blessed death.

The eye which turns from a white object in the light of the sun and goes into a less fully lighted place will see everything as dark.

I have always felt it is my destiny to build a machine that would allow man to fly.

The part always has a tendency to reunite with its whole in order to escape from its imperfection.