Nature does not complete things. She is chaotic. Man must finish, and he does so by making a garden and building a wall.

Nature knows no indecencies; man invents them.

Nature appears to have been the cruel stepmother rather than the mother of many animals.

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

What a book a devil's chaplain might write on the clumsy, wasteful, blundering, low, and horribly cruel work of nature!

There is no result in nature without a cause; understand the cause and you will have no need of the experiment.