Suppose that Schweitzer and Gandhi are equally saintly and that Green and White are equally unsavory characters with long criminal records. Suppose that on separate occasions Green gratuitously slaps Schweitzer in the face, Schweitzer gratuitously slaps White in the face, and Gandhi gratuitously slaps Schweitzer in the face. If guilt were proportional, not just to the offence, but to the moral uprightness of the offended party, then Green would incur more guilt and liability to punishment than would Schweitzer. For since Schweitzer is worthier than White, Green’s failure to show respect for Schweitzer was more grievous than Schweitzer’s failure to...