Social evolution may be the result of intention, but it rarely, if ever, produces the result intended.

Human destiny is bound to remain a gamble, because at some unpredictable time and in some unforeseeable manner nature will strike back.

Eradication of microbial disease is a will-o'-the-wisp; pursuing it leads into a morass of hazy biological concepts and half truths.

...Search for the cause may be a hopeless pursuit because most disease states are the indirect outcome of a constellation of circumstances.

What happens in the mind of man is always reflected in the disease of his body.

A sense of continuity with the rest of creation is a form of religious experience essential to sanity.

Sometimes the more measurable drives out the most important.