The longer we dwell on our misfortunes, the greater is their power to harm us.

Man, alone, has the power to transform his thoughts into physical reality; man, alone, can dream and make his dreams come true.

Trouble springs from idleness, and grievous toil from needless ease.

I'm not as famous as Stephen Hawking, but certainly in the U.S., I have a very high profile for a scientist. It is an awesome responsibility, one that I don't shoulder lightly.

I'm not looking for sympathy at all.