When we hate our enemies, we are giving them power over us: power over our sleep, our appetites, our blood pressure, our health, and our happiness. Our enemies would dance with joy if only they knew how they were worrying us, lacerating us, and getting even with us! Our hate is not hurting them at all, but our hate is turning our own days and nights into a hellish turmoil.
Desiring another person is perhaps the most risky endeavor of all. As soon as you want somebody—really want him—it is as though you have taken a surgical needle and sutured your happiness to the skin of that person, so that any separation will now cause a lacerating injury.