I cannot persuade myself that a beneficent and omnipotent God would have designedly created the Ichneumonidæ [parasitic wasps] with the express inten… - Charles Darwin

I discovered, though unconsciously and insensibly, that the pleasure of observing and reasoning was a much higher one than that of skill and sport. The primeval instincts of the barbarian slowly yielded to the acquired tastes of the civilized man.

The time is always ripe for the re-interpretation of theories in the light of new vision and of new facts. This is the very province of science.

Man with all his noble qualities, with sympathy which feels for the most debased, with benevolence which extends not only to other men but to the humblest living creature, with his god-like intellect which has penetrated into the movements and constitution of the solar system — with all these exalted powers — Man still bears in his bodily frame the indelible stamp of his lowly origin.