[T]he demands of morality pervade every aspect and moment of our lives—and we all fail to meet is standards. [F]ew of us believe the claim, and that none of us live I accordance with it. It strikes us as outrageously extreme in its demands[.] The claim is deeply counterintuitive. But it is true.

Shelly Kagan, The Limits of Morality, Oxford, 1989, p. 2