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.
The clear awareness of having been born into a losing struggle need not lead one into despair. I do not especially like the idea that one day I shall be tapped on the shoulder and informed, not that the party is over but that it is most assuredly going on—only henceforth in my absence. (It's the second of those thoughts: the edition of the newspaper that will come out on the day after I have gone, that is the more distressing.) Much more horrible, though, would be the announcement that the party was continuing forever, and that I was forbidden to leave. Whether it was a hellishly bad party or a party that was perfectly heavenly in every respect, the moment that it became eternal and compulsory would be the precise moment that it began to pall.