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

"I want to be thoroughly used up when I die, for the harder I work the more I live. I rejoice in life for its own sake."

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

"We learn from experience that men never learn anything from experience."

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

"What we want to see is the child in pursuit of the knowledge not the knowledge in pursuit of the child."