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

The math is dead simple: it seems that the frequency of planets able to support life is roughly one percent. In other words, a billion or more such worlds exist in our galaxy alone. That's a lot of acreage, and it takes industrial-strength credulity to believe it's all bleakly barren.

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.

The revelation of thought takes men out of servitude into freedom.