Princess Irulan Corrino

Whenever a source an opponent controls deals damage to you, that player sacrifices a permanent of their choice.

My father once told me that respect for the truth comes close to being the basis for all morality. "Something cannot emerge from nothing," he said. This is profound thinking if you understand how unstable "the truth" can be.
-from "Conversations with Muad'Dib" by the Princess Irulan