The universe is so unhuman, that is, it goes its way with so little thought of man. He is but an incident, not an end. We must adjust our notions to the discovery that things are not shaped to him, but that he is shaped to them. The air was not made for his lungs, but he has lungs because there is air; the light was not created for his eye, but he has eyes because there is light. All the forces of nature are going their own way; man avails himself of them, or catches a ride as best he can. If he keeps his seat, he prospers; if he misses his hold and falls, he is crushed.
John Burroughs, The Light of Day (Volume 11); Religious Discussions and Criticisms from the Naturalist's Point of View
evolution, nature, science