But all these things are disease and craziness of mind, transporting a
man out of his own nature; and in this men testify against themselves.
For if a sow or a bitch kill the young they have brought forth, men
look dejected, are disturbed, sacrifice to the Gods to avert the
mischief, and do account it a miracle; because men know that Nature has
implanted in all creatures the love of their young, so that they should
feed them and not kill them. For as among metals gold, though mixed
with much rubbish, will appear; so Nature, even in vicious deeds and
affection, declares the love to posterity. For poor people do not rear
their children, fearing that, if they should not be well educated, they
would prove slavish, clownish, and destitute of all things commendable;
since they cannot endure to entail poverty, which they look upon as the
worst of all evils or diseases, upon their posterity.