"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."

"The world is moved not only by the mighty shoves of the heroes, but also by the aggregate of the tiny pushes of each honest worker."

"Life is a succession of lessons which must be lived to be understood."

"So long as the love of liberty is not dead in the hearts of men, and so long as the love of justice remains, so long shall we have the spirit of progress."

"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."