How happy is the lot of the mathematician! He is judged solely by his peers, and the standard is so high that no colleague or rival can ever win a reputation he does not deserve. No cashier writes a letter to the press complaining about the incomprehensibility of Modern Mathematics and comparing it unfavorably with the good old days when mathematicians were content to paper irregularly shaped rooms and fill bathtubs without closing the waste pipe.

There are good books which are only for adults. There are no good books which are only for children.

Most poetry is the utterance of a man in some state of passion, love, joy, grief, rage, etc., and no doubt this is as it should be. But no man is perpetually in a passion and those states in which he is amused and amusing, detached and irreverent, if less important, are no less amusing. If there were no poets who, like Byron, express these states, Poetry would lack something.

A vice in common can be the ground of a friendship but not a virtue in common. X and Y may be friends because they are both drunkards or womanizers but, if they are both sober and chaste, they are friends for some other reason.

Goodness is easier to recognize than to define.

The commonest ivory tower is that of the average man, the state of passivity towards experience.

The element of craftsmanship in poetry is obscured by the fact that all men are taught to speak and most to read and write, while very few men are taught to draw or paint or write music.