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.

To consider hypotheses is surely always better than to dogmatize ins blaue hinein

Impulse without reason is enough, and reason without impulse is a poor makeshift.

Faith is synonymous with working hypothesis.

Any object not interesting in itself may become interesting through becoming associated with an object in which an interest already exists.

Regarding mutual tolerance: It is negative in one sense, but positive in another. It absolutely forbids us to be forward in pronouncing on the meaninglessness of forms of existence other than our own; and it commands us to tolerate, respect, and indulge those whom we see harmlessly interested and happy in their own ways, however unintelligible these may be to us. Hands off.

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.