In describing morality as an art, I do not merely mean that there is a fine art of conduct, of which good manners are an obvious instance: the delicate adjustment of behaviour to small or subtle changes in our circumstances, the variation of our responses with differences in the age, standing, consideration of the persons with whom we talk. That there is such an art of good life is true, but it only means that in the instruments of life, as with our microscopes and telescopes, there are fine as well as coarse adjustments. Nor do I mean merely that, as Plato said, living is a craft, like weaving or carpentering, and that virtue is its technique. I mean something more than an analogy; and that the best way to understand morality is to see what it has in common with fine art, and at the same time the differences which, leaving it still an art, separate it from fine art.