Let me say at once that if, after the elimination of all untruths from Christianity, we could build a belief in God and immortality on the residue, we should then have a far more powerful incentive to right conduct than anything that I am about to urge. I fully admit that to tell the ordinary mortal brought up in the Christian faith to do right for right's sake will often be futile, inspiring though the sentiment may be for some few of us. I admit also the fact that morality always tends to the well-being of the individual and the race. It is the one and only sound argument for the working of any ethical purpose in nature, and, if we can feel that in leading the moral life we are helping to carry out some high purpose in which we are personally concerned, such a belief will certainly be of great ethical value. In the following argument, however, I hope to show that, even without a religious incentive, we have all-sufficient reasons for leading the moral life. At present our morality is bound up with a belief which is false, and which people are beginning to feel and know to be false. Therefore it is more than ever necessary that we should learn more of those reasons for morality which do not depend upon this or that belief. THE NECESSITY FOR MORALITY. The man who does not realise that any such cogent reasons exist will argue: "I quite understand that the welfare of society depends upon the moral conduct of its members; but why should I care for the good of society? There are many immoral things which I can do without being found out--without any harm coming to me, directly or indirectly. Neither do I believe in the familiar adage, 'Follow nature, and you cannot go wrong.' Civilisation is continually wrestling with nature; we go against nature a thousand times a day. Why should I not follow nature just so far as I can get out of my nerves a maximum of pleasure at the expense of a minimum of pain? Tell me, then, you who do not believe in hell or heaven, you who think we can live under a system of morality which entirely dispenses with supernatural sanctions, why should I lead a moral life?"