The place to improve the world is first in one's own heart and head and hands.

The place to improve the world is first in one's own heart and head and hands, and then work outward from there.

I've taken my destiny into my own hands and I'm in a happy place.

One geometry cannot be more true than another; it can only be more convenient. Geometry is not true, it is advantageous.

Boredom always precedes a period of great creativity.

For every fact there is an infinity of hypotheses.