The age-old and noble thought of 'I will lay down my life to save another,' is nothing more than cowardice.

Thus we have given to man a pedigree of prodigious length, but not, it may be said, of noble quality.

Man selects only for his own good: Nature only for that of the being which she tends.

If I had not been so great an invalid, I should not have done so much as I have accomplished.

The fact of evolution is the backbone of biology, and biology is thus in the peculiar position of being a science founded on an improved theory, is it then a science or faith?

The man who walks with Henslow.

If every one were cast in the same mould, there would be no such thing as beauty.