". . .the Lord does not in vain prepare nutriment for children in their mothers' bosoms, before they are born. But those on whom he confers the honor of mothers, he, in this way, constitutes nurses; and they who deem it a hardship to nourish their own offspring, break, as far as they are able, the sacred bond of nature. If disease, or anything of that kind, is the hindrance, they have a just excuse; but for mothers voluntarily, and for their own pleasure, to avoid the trouble of nursing, and thus to make themselves only half-mothers, is a shameful corruption."
-John Calvin, Commentary on Genesis 21.7