Let us treat, then, the beauty of holiness, the love of truth, '_the treasure of human affection_,' and so forth, as Dr.Tyndall has treated the infusions in which life is said to originate.

Let us boil them down, so to speak, and destroy every germ of religion in them, and then see how far they will generate the same ecstatic happiness.

And let us treat in this way vice no less than virtue.

Having once done this, we may honestly claim whatever yet remains to us.

Then, we shall see what materials of happiness we can, as positive thinkers, call our own.