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.

Our patience will achieve more than our force.

One man's ways may be as good as another's, but we all like our own best.

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.