Thus truth, frankness, courage, love, humility and all the virtues range themselves on the side of prudence, or the art of securing a present well-being. I do not know if all matter will be found to be made of one element, as oxygen or hydrogen, at last, but the world of manners and actions is wrought of one stuff, and begin where we will we are pretty sure in a short space to be mumbling our ten commandments.