“We haven't failed. We now know a thousand things that won't work, so we're that much closer to finding what will.”

“I have sometimes been wildly, despairingly, acutely miserable, but through it all I still know quite certainly that just to be alive is a grand thing.”

“Iron rusts from disuse, stagnant water loses its purity, and in cold weather becomes frozen; even so does inaction sap the vigors of the mind.”

“A man should never be ashamed to admit he has been in the wrong, which is but saying, in other words, that he is wiser today than he was yesterday.”

“A constructive, useful life, good works, and good relationships are as valid as writing poetry or inventing a machine. Anything that one does well and obtains satisfaction from is a good enough reason for living. To be a decent human being that people like and feel better for knowing is enough.”