The desert sky is encircling, majestic, terrible.

Man is a distance runner as a consequence of hundreds of thousands of years of chasing antelopes, horses, elephants, wild cattle, and deer.

Men ran after and ate horses for four hundred thousand years. The outcome is more than a love of horse flesh; it is a runner's body.

The natural world is not only a set of constraints but of contexts within which we can more fully realize our dreams.

The desert sky is encircling, majestic, terrible.

The human cardiovascular system evolved as part of the physiology of [prehistoric] hunters, who ran for their lives.

When men do not run they are likely to die prematurely from dysfunction of the heart and vascular systems or from disabling chronic disease.