To study the mind is to study adaptation in action; every thought is a tool for living.

To feed the world, we must first understand the soil beneath our feet.

Art is contemplation. It is the pleasure of the mind which searches into nature and which there divines the spirit of which nature herself is animated.

The world is so unpredictable. Things happen suddenly, unexpectedly. We want to feel we are in control of our own existence. In some ways we are, in some ways we're not.

The greatest threat to our planet is the belief that someone else will save it.