A pessimist is a man who thinks everybody is as nasty as him... - George Bernard Shaw

"Success does not consist in never making mistakes but in never making the same one a second time."

"A life spent making mistakes is not only more honorable, but more useful than a life spent doing nothing."

"The man with toothache thinks everyone happy whose teeth are sound.The poverty stricken man makes the same mistake about the rich man."

"The man who writes about himself and his own time is the only man who writes about all people and all time."

"A fool's brain digests philosophy into folly, science into superstition, and art into pedantry. Hence University education."