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

Our ancestor was an animal which breathed water, had a swim-bladder, a great swimming tail, an imperfect skull & undoubtedly was an hermaphrodite! Here is a pleasant genealogy for mankind.

It is no valid objection that science as yet throws no light on the far higher problem of the essence or origin of life. Who can explain gravity? No one now objects to following out the results consequent on this unknown element of attraction.

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

I feel like an old warhorse at the sound of a trumpet when I read about the capturing of rare beetles.

Many kinds of monkeys have a strong taste for tea, coffee and spirituous liqueurs.

Language is an art, like brewing or baking.... It certainly is not a true instinct, for every language has to be learnt.