Charles Darwin — "The fact that I can't remember anything from the first three years of my life is…"

"The expression of the emotions in man and animals."

"Thus, from the war of nature, from famine and death, the most exalted object which we are capable of conceiving, namely, the production of the higher animals, directly follows."

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

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

"We are like a judge who has to sum up and deliver judgment, not on the evidence of witnesses, but on the arguments of counsel."