I should like, if I can, to interest you to-night in one particular question about Moral Philosophy. It is a question which resembles most philosophical questions, in respect of the fact that philosophers are by no means agreed as to what is the right answer to it: some seem to be very strongly convinced that one answer is correct, while others are equally strongly convinced of the opposite. For my own part I do feel some doubt as to which answer is the right one, although, as you will see, I incline rather strongly to one of the two alternatives. I should like very much, if I could, to find some considerations which seemed to me absolutely convincing on the one side or the other; for the question seems to me in itself to be an exceedingly interesting one.
I have said that the question is a question _about_ Moral Philosophy; and it seems to me in fact to be a very large and general question which affects the whole of Moral Philosophy. In asking it, we are doing no less than asking what it is that people are doing when they study Moral Philosophy at all: we are asking what sort of questions it is which it is the business of Moral Philosophy to discuss and try to find the right answer to. But I intend, for the sake of simplicity, to confine myself to asking it in two particular instances. Moral Philosophy has, in fact, to discuss a good many different ideas; and though I think this same question may be raised with regard to them all, I intend to pick out two, which seem to me particularly fundamental, and to ask it with regard to them only.
My first business must be to explain what these two ideas are.
The name Moral Philosophy naturally suggests that what is meant is a department of philosophy which has something to do with morality. And we all understand roughly what is meant by morality. We are accustomed to the distinction between moral good and evil, on the one hand, and what is sometimes called physical good and evil on the other. We all make the distinction between a man's moral character, on the one hand, and his agreeableness or intellectual endowments, on the other. We feel that to accuse a man of immoral conduct is quite a different thing from accusing him merely of bad taste or bad manners, or from accusing him merely of stupidity or ignorance. And no less clearly we distinguish between the idea of being under a moral obligation to do a thing, and the idea of being merely under a legal obligation to do it. It is a commonplace that the sphere of morality is much wider than the sphere of law: that we are morally bound to do and avoid many things, which are not enjoined or forbidden by the laws of our country; and it is also sometimes held that, if a particular law is unjust or immoral, it may even be a moral duty to disobey it--that is to say that there may be a positive conflict between moral and legal obligation; and the mere fact that this is held, whether truly or falsely, shows, at all events, that the one idea is quite distinct from the other.