Deepest principle of human nature is to be appreciated.

The world is all the richer for having a devil in it, so long as we keep our foot upon his neck.

You can't out-perform your self-image.

The art of remembering is the art of thinking. When we wish to fix a new thing in either our own mind or a pupil's, our conscious effort should not be so much to impress and retain it as to connect it with something else already there. The connecting is the thinking; and, if we attend clearly to the connection, the connected thing will certainly be likely to remain within recall.

In all this process of acquiring conceptions, a certain instinctive order is followed. There is a native tendency to assimilate certain kinds of conception at one age, and other kinds of conception at a later age.

We, the lineal representatives of the successful enactors of one scene of slaughter after another, must, whatever more pacific virtues we may also possess, still carry about with us, ready at any moment to burst into flame, the smoldering and sinister traits of character by means of which they lived through so many massacres, harming others, but themselves unharmed.

If theological ideas prove to have a value for concrete life, they will be true, for pragmatism, in the sense of being good for so much. How much more they are true, will depend entirely on their relations to the other truths that also have to be acknowledged.