In teaching, you must simply work your pupil into such a state of interest in what you are going to teach him that every other object of attention is banished from his mind; then reveal it to him so impressively that he will remember the occasion to his dying day; and finally fill him with devouring curiosity to know what the next steps in connection with the subject are.

Our belief at the beginning of a doubtful undertaking is the one thing that assures the successful outcome of any venture.

I am, myself, a very poor visualizer and find that I can seldom call to mind even a single letter of the alphabet in purely retinal terms. I must trace the letter by running my mental eye over its contour in order that the image of it shall leave any distinctness at all.

Man can change his life simply by changing his attitude.

I don't sing because I'm happy; I'm happy because I sing.

A remarkable parallel, which I think has never been noticed, obtains between the facts of social evolution on the one hand, and of zological evolution as expounded by Mr. Darwin on the other.

Our lives are like islands in the sea, or like trees in the forest. The maple and the pine may whisper to each other with their leaves ... But the trees also commingle their roots in the darkness underground, and the islands also hang together through the ocean's bottom.