I think that any love without God is artificial and not genuine. For God, the Creator of the soul, filled it with the feeling of love, along with the other virtues, so that it might love God and the things which God wants. But if the soul loves something other than God and what God wants, this love is said to be artificial and invented. And if someone loves his neighbor but does not warn him when he sees him going astray or correct him, such is only a pretense of love.

—Commentary on the Epistle to the Romans