 What Jones is claiming here is that the very formulation of benevolence presupposes the rationality of self-love. If we had no independent conception of the value of happiness, then neither self-love nor benevolence would be rationally binding. But the only way that I can come to grasp the value of happiness is by grasping it in my own case. If I grasp the value of your happiness for you, it is only because I already grasp the value of my happiness for me: 