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.

Any passion to collect has some meaning behind it.

The challenge of life, I have found, is to build a resume that doesn't simply tell a story about what you want to be, but it's a story about who you want to be.