It has become evident that the primary lesson of the study of evolution is that all evolution is coevolution: every organism is evolving in tandem with the organisms around it.
“Pain was something we were expected to endure. But I doubt very much if you would be entirely happy today if a doctor threw a towel in your face and jumped on you with a knife.”
“You don't seem to realize that a poor person who is unhappy is in a better position than a rich person who is unhappy. Because the poor person has hope. He thinks money would help.”