Anyone who has never made a mistake has never tried anything new.

A man is but the product of his thoughts. What he thinks he becomes.

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

Change your thoughts, and you change your destiny.

A clever person solves a problem. A wise person avoids it.

I have no special talents. I am only passionately curious.

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

Reality is merely an illusion.

Only a life lived for others is a life worthwhile.