The act of reproducing the human body can be made a sacred one or left an animal one. The monastic celibates are not the only persons who live what they call a "pure" life. Any married couple can do the same, provided they limit their physical relations to reproductive purposes alone and even then limit the number of their children to what reason and intuition direct. This means that they will refuse to dissipate the generative energies for mere pleasure, but instead will deliberately seek to transmute them. Thus marriage is redeemed by the few who can rise to this lofty ideal, as it is degraded by the many who insist on keeping to their kinship with the animals.
-- Notebooks Category 5: The Body > Chapter 7: Sex > # 94