Christianity persecuted, tortured, and burned. Like a hound it tracked the very scent of heresy. It kindled wars, and nursed furious hatreds and ambitions. It sanctified, quite like Mohammedism, extermination and tyranny. All this would have been impossible if, like Buddhism, it had looked only for peace and the liberation of souls. It looked beyond; it dreamt of infinite blisses and crowns it should be crowned with before an electrified universe and an applauding God... Buddhism had tried to quiet a sick world with anesthetics; Christianity sought to purge it with fire.

The loftiest edifices need the deepest foundations.

Progress, far from consisting in change, depends on retentiveness. When change is absolute there remains no being to improve and no direction is set for possible improvement: and when experience is not retained, as among savages, infancy is perpetual. Those who cannot remember the past are condemned to repeat it. In the first stage of life the mind is frivolous and easily distracted; it misses progress by failing in consecutiveness and persistence. This is the condition of children and barbarians, in which instinct has learned nothing from experience.

Civilization is perhaps approaching one of those long winters that overtake it from time to time. Romantic Christendom - picturesque, passionate, unhappy episode - may be coming to an end. Such a catastrophe would be no reason for despair.

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 one thing to lack a heart and another to possess eyes and a just imagination.

Experience seems to most of us to lead to conclusions, but empiricism has sworn never to draw them.