Here is the problem of material life: we have enemies. And why do we have enemies? Because we believe we will triumph over them, one day. We create our enmities out of the belief that we are right and that one day justice will bless us. We do not understand that there is no way to win against true enemies, our best enemies. They carry too much of ourselves within them for us to want to see them subjugated and punished.
This is the painful secret: to like an enemy, we must renounce the expectation of winning. And this is very hard. We must at least understand that in its interactive form, beating an enemy means our own defeat, and we will never allow this.
— Nilton Bonder, The Kabbalah of Envy