For anything worth having one must pay the price, and the price is always work, patience, love, self-sacrifice - no paper currency, no promises to pay, but the gold of real service.

Joy in the universe and keen curiosity about it all - that has been my religion.

I seldom go into a natural history museum without feeling as if I were attending a funeral.

The spirit of man can endure only so much, and when it is broken only a miracle can mend it.