If the misery of the poor be caused not by the laws of nature, but by our institutions, great is our sin.

"It has been a bitter mortification for me to digest the conclusion that the 'race is for the strong' and that I shall probably do little more but be content to admire the strides others made in science."

"It is not the strongest of the species that survive, nor the most intelligent, but the one most responsive to change."