Gregory the Great — as excerpted in the Catena Aurea on Luke 14:25-27

“(in Hom. ut sup.) Now to shew that this hatred towards relations proceeds not from inclination or passion, but from love, our Lord adds, yea, and his own life also. It is plain therefore that a man ought to hate his neighbour, by loving as himself him who hated him. For then we rightly hate our own soul when we indulge not its carnal desires, when we subdue its appetites, and wrestle against its pleasures. That which by being despised is brought to a better condition, is as it were loved by hatred.”