I don't know if you ever really feel like you've made it.

Those who occupy their minds with small matters, generally become incapable of greatness.

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.

Desire is the starting point of all achievement, not a hope, not a wish, but a keen pulsating desire which transcends everything.

Any passion to collect has some meaning behind it.