The Basis of Morality by Part 3 Chapter 7 Page 3

negative. The second degree is sharply distinguished from the first, through the positive character of the actions resulting therefrom; for at this point Compassion does more than keep me back from injuring my neighbour; it impels me to help him. And according as, on the one hand, my sense of direct participation is keen and deep, and, on the other hand, the distress is great and urgent, so shall I be constrained by this motive, which (be it noted) is purely and wholly moral, to make a greater or less sacrifice in order to meet the need or the calamity which I observe; and this sacrifice may involve the expenditure of my bodily or mental powers, the loss of my property, freedom, or even life.

So that in this direct suffering with another, which rests on no arguments and requires none, is found the one simple