Tao Te Ching

“our medical men exert their utmost skill to save the life of every one to the last moment...Thus the weak members of civilised societies propagate their kind. No one who has attended to the breeding of domestic animals will doubt that this must be highly injurious to the race of man... hardly any one is so ignorant as to allow his worst animals to breed.”

— Charles Darwin 1809 – 1882 CE
from Descent of Man