An idea, to be suggestive, must come to the individual with the force of revelation.

It is astonishing how many mental operations we can explain when we have once grasped the principles of association

A great idea goes through three stages on its way to acceptance: 1) it is dismissed as nonsense, 2) it is acknowledged as true, but insignificant, 3) finally, it is seen to be important, but not really anything new.

I am well aware how odd it must seem to some of you to hear me say that an idea is true so long as to believe it is profitable to our lives

It is not probable that the reader will be satisfied with any of these solutions, and contemporary philosophers, even rationalistically minded ones, have on the whole agreed that no one has intelligibly banished the mystery of fact.

The war-function has grasped us so far; but the constructive interests may some day seem no less imperative, and impose on the individual a hardly lighter burden.

If any one phrase could gather its (religion's) universal message, that phrase would be, - All is not vanity in this Universe, whatever the appearances may suggest.