What can't love do?

One of Chateau Heartiste's commenters writes: "Every civilized person in the West claims they abhor eugenics until their daughter wants to get married." To which CH replies:

Parents aren’t the only secret eugenicists. The daughters and sons will find it much easier to fall in love with a person who is high mate value and thus eugenically optimal. God teaches us the power of Love so that we may advance as a species.

Interesting thing about Love. Love can be both a rationalization for a poor mate choice — “oh, but she’s so in love, and that’s all that matters” — and a euphemism for a eugenically pleasing pairing — “it wasn’t his money, it was love that brought them together”. What can’t Love do?

Found here.