Tyranny always has its rationale. - Michael Swanwick

(All human beings have their price, and quite often it is surprisingly small. The trick consists of knowing exactly what that price is, when they themselves do not.)

“Fool. There is no why. The very word is a semantic fallacy. Ask me how and I can lay out for you cause and effect, one thing leading to another, the alcohol acting on a grieving man’s mind, the door inadequately guarded, the people within isolated from the common lot of humanity by the dreadful secret of their ancestry.”
He rattled his glass.
Nathan refilled it.
Faust drank. “But to ask why,” he continued, “implies that things happen for a purpose, and they do not. There is no purpose, no direction, no guidance to events. Nothing means anything. The world is a howling desert of meaningless, and reason is useless before it. There is only blind event.”
He stared off into the bleak landscapes of the future while Nathan refilled his glass and refilled his glass and refilled his glass.
He saw so clearly now, without delusion or hope. It was a crystal night of the soul.

Let me explain to you," the Horned One said, "the nature of history."
"What?"
"The first thing you need to know is that history happens almost exclusively in the dark...Here is your second lesson: History is that which cannot be prevented...Here is your third and final lesson: History is simply life with all the bits any sane person might care to experience left out.