The Limits of KindnessCaspar Hare presents a novel approach to questions of what we ought to do, and why we ought to do it. The traditional way to approach this subject is to begin by supposing a foundational principle, and then work out its implications. Consequentialists say that we ought to make the world impersonally better, for instance, while Kantian deontologists say that we ought to act on universalizable maxims. And contractualists say that we ought to act in