"Self-pity is our worst enemy and if we yield to it, we can never do anything good in the world."

"The test of a first-rate intelligence is the ability to hold two opposed ideas in mind at the same time and still retain the ability to function."

"I am sure that the true way to make a life happy is to make it useful."

"The public must learn that the blind man is neither a genius nor a mountebank. He has a right to his share in the work of the world."

"You can't be a little bit pregnant."