On such matters, most advanced thinkers have been long in general agreement. But there is one very important point which, so far as I know, has been very little touched upon--chiefly, I think, because such radical thinkers have been for the most part destructive, and so have not envisaged this particular side of the question. I hope I have been able to convince you that the scientific manner of thinking can lay the foundation for something constructive in religion: this great problem, however, remains: what sort of form or organization shall any such new-moulded religion take on itself? We have just decided that fixed and rigid dogma is impossible, and that completeness is out of the question. Yet humanity craves for certainty and is not content to leave any factor out of the scheme of things. To this we answer that it is here that real faith enters. We cannot know the absolute, nor have we discovered a goal for our efforts. But we have discovered a unity embracing all that we know, and a direction starting at the first moment to which our reconstructive thought can penetrate, continuing till to-day, and showing an acceleration of speed on which we may raise our hopes for the future. We do not know all. For instance, I have studiously avoided ever mentioning the word _immortality_, since I believe that Science cannot yet profitably discuss that question. But the discovery of unity in all that has so far been studied gives us reasonable faith that its wings will reach out to cover all that we shall still be enabled to learn, while the unbroken continuity of evolutionary direction gives us the same sort of right to believe that it will continue to-morrow and on into time as we have to believe that apples will continue to fall to the earth. The study of evolution may give us a further help. We have seen how the final steps of the highest forms of animals have been in the direction of plasticity of organization: we see it in the rise of man from mammals, in higher as against more primitive levels of human culture, in great men as against ordinary men. There can be no doubt that its acquisition constitutes a step in evolutionary progress. Plasticity is needed in any new religion. And plasticity means tolerance, means the reduction of fixity of ritual, of convention, of dogma, of clericalism. It is clear that, as complexity increases, need will be felt for a finer adjustment of satisfaction to mood, a more delicate adaptation of religion to the individual. A few types of ceremony satisfied primitive races: an elaborate system, fixed in essence, fluctuating in detail, has grown up in modern Christianity. But the more complex the mind, the less does it like to have to “wait till Sunday”--the less is it satisfied with the solely biblical point of view, or the literary and musical level of Hymns A. and M.