The greatness comes not when things go always good for you, but the greatness comes when you are really tested, when you take some knocks, some disappointments, when sadness comes; because only if you've been in the deepest valley can you ever know how magnificent it is to be on the highest mountain. Always give your best. Never get discouraged. Never be petty. Always remember: Others may hate you. But those who hate you don't win, unless you hate them. And then, you destroy yourself.

Speech to the assembled White House staff before his final departure (August 9, 1974)