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

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.

Any passion to collect has some meaning behind it.

Peace is its own reward.

Seek not, my soul, the life of the immortals; but enjoy to the full the resources that are within thy reach.