Kai Nielsen on Ethical Certainty
Ethics without God, rev. ed. (Prometheus Books: 1990), 10-11.
It is more reasonable to believe such elemental things [as wife-beating and child abuse] to be evil than to believe any skeptical theory that tells us we cannot know or reasonably believe any of these things to be evil... I firmly believe that this is bedrock and right and that anyone who does not believe it cannot have probed deeply enough into the grounds of his moral beliefs.