 Still, the question arises, what does the claim of presupposition show? It shows at least this much, that the two principles are consistent—relative to the assumption, as Jones is quick to point out, that benevolence is itself non-contradictory (324). This is a significant development, since Sidgwick’s central concern was with the compatibility of the two principles. If benevolence requires that self-love be true for it to be true (or false), then the two must be consistent (assuming benevolence is). 