People unacquainted with moral philosophy suppose that its business is to tell us the difference between right and wrong. Many moral philosophers, unfortunately, seem to agree with them, to the extent, at any rate, of taking it for granted that there is some one divison of actions into two classes, which division is of some especial or even unique significance. Actions, they have supposed, are either right or wrong. If they are right, then they must and ought to be done, and to do them is our duty. If they are wrong, then they must not and ought not to be done, and it is our duty not to do them. If we do what is right, and do this because it is right, and not just because it suits us, then we have performed a morally good action, and we deserve praise or commendation. If we have done something which is wrong, then we have performed a morally bad action, and deserveblame, and possibly punishment. Finally, a man manifests his moral goodness by performing, from a sense of duty, those actions which belong to the first class, and omitting those which belong to the second class; since there are no other ways in which actions may be classified morally, he has ample oppo tunity for exercising his talents, and the morally good man, or the conscientious man, or the dutiful man, becomes the archetype of what a man ought to be.