Better the devils you know than the one you don't.

Why choose the lesser evil anyway, when the greater evil is usually higher quality and will last longer before it breaks?

A man is an angel that has become deranged, Joe Fernwright thought. Once they – all of them – had been genuine angels, and at that time they had had a choice between good and evil, so it was easy, easy being an angel. And then something happened. Something went wrong or broke down or failed. And they had become faced with the necessity of choosing not good or evil but the lesser of two evils, and so that had unhinged them and now each was a man.

It may be necessary temporarily to accept a lesser evil, but one must never label a necessary evil as good.