I am a sort of collector of religions: and the curious thing is that I find I can believe in them all.

Nothing can save us from a perpetual headlong fall into a bottomless abyss but a solid footing of dogma; and we no sooner agree to that than we find that the only trustworthy dogma is that there is no dogma.

The reasonable man will adjust to the demands of his environment. The unreasonable man expects his environment to adjust to his own needs. Therefore, all progress depends upon the unreasonable man.

No severity of punishment deters when detection is uncertain, as it always must be.

An English army led by an Irish general: that might be a match for a French army led by an Italian general.

Man can climb to the highest summits, but he cannot dwell there long.

No child should be brought up to suppose that its food and clothes come down from heaven or are miraculously conjured from empty space by papa. Loathsome as we have made the idea of duty (like the idea of work) we must habituate children to a sense of repayable obligation to the community for what they consume and enjoy, and inculcate the repayment as a point of honor.