The more I see, the less I know for sure.

Time stays long enough for anyone who will use it.

The greatest enemy of knowledge is not ignorance, it is the illusion of knowledge.

Imagination is more important than knowledge. Knowledge is limited. Imagination encircles the world.

The most important knowledge is that which guides the way you lead your life.

Realize that everything connects to everything else.

I have been impressed with the urgency of doing. Knowing is not enough, we must apply. Being willing is not enough, we must do.

If you can't explain it to a six year old, you don't understand it yourself.

Why does the eye see a thing more clearly in dreams than the imagination when awake?