"I have tried to be a good boy, and I have done my best."

"The greatest discovery of all time is that a person can change his future by merely changing his attitude."

"I have called this principle, by which each slight variation, if useful, is preserved, by the term Natural Selection."

"The more I see of the world, the more I am convinced of the fact that it is full of wonders."

"I own that I cannot see as plainly as others do, and as I should wish to do, evidence of design and beneficence on all sides of us. There seems to me too much misery in the world. I cannot persuade my…"