I wish then, this morning, for a little while to review with you some of the steps in evolution that the world has taken, and let you see how it has worked in different departments of human thought and human life, so that you may become convinced if possible, as I am that evolution has never thrown away, has never lost, anything precious in any department of the world since human life began. If I believed it did, I would fight against it. For instance, here is a devout Catholic servant-girl. She believes in her saints. She counts her beads and recites her Ave Marias. She goes to the cathedral on Sunday morning. And this is her world of poetry and romance. Here is a source of comfort. This throws a halo around the drudgery of the kitchen, the service of the house in which she is an employee. Would I take away this trust, this poetry, this romance, untrue as I believe it to be in form, inadequate as I believe it to be? Would I take it away, and leave her mind bare, her heart empty, leave her without the comfort, without the inspiration? Not for one moment. I would take it away only if, in the process, I could supply her with something just a little better, a little more nearly true, something that would give her comfort, something that would be an inspiration to her, something that would buoy her up as a hope, something that would help her to be faithful and true in the work of her daily life. This is what evolution means. It means taking away the old, and, in the process, substituting therefore something a little bit better. I would not take away the idol of the lowest barbarian unless I could help him to take a step a little higher, so that he should see the intellectual and spiritual thing that the idol stood for, and so enable him to walk his pathway of life as firmly, as faithfully, as hopefully, as he did before. I have been watching the work that has been going on in our streets during the last months. You, too, have seen how they will replace the track on an entire line of railway without stopping the running of the cars. They take away the old and worn and poorer, but constantly substitute something better for it; and human life moves right on. Everything is better; the change has come; but that change is; an improvement. This is what evolution does; for evolution is nothing new in the world. It is only the name for the method of God, which is as old as the universe itself, new to us because we have just discovered it; but as old as the light of a star that has been travelling for twenty-five thousand years, and has just come into the field of the astronomer's telescope, so that he announces it as a new discovery.. This is what it means.