The man who walks with Henslow.

The formation of different languages and of distinct species and the proofs that both have been developed through a gradual process, are curiously parallel.

Sympathy for the lowest animals is one of the noblest virtues with which man is endowed.

I conclude that the musical notes and rhythms were first acquired by the male or female progenitors of mankind for the sake of charming the opposite sex.

The tree of life should perhaps be called the coral of life, base of branches dead; so that passages cannot be seen-this again offers contradiction to constant succession of germs in progress.

Such simple instincts as bees making a beehive could be sufficient to overthrow my whole theory.

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