Health is the soul that animates all the enjoyments of life, which fade and are tasteless without it.

Those who educate children well are more to be honored than they who produce them; for these only gave them life, those the art of living well.

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.