A child educated only at school is an uneducated child.

It is a pleasant surprise to him (the pure mathematician) and an added problem if he finds that the arts can use his calculations, or that the senses can verify them, much as if a composer found that sailors could heave better when singing his songs.

It is a great advantage for a system of philosophy to be substantially true.

A body seriously out of equilibrium, either with itself or with its environment, perishes outright. Not so a mind. Madness and suffering can set themselves no limit.

Beautiful things, when taste is formed, are obviously and unaccountably beautiful.

Religion is the natural reaction of the imagination when confronted by the difficulties in a truculent world.

Love is a brilliant illustration of a principle everywhere discoverable: namely, that human reason lives by turning the friction of material forces into the light of ideal goods.