This question we conceive to be of vital importance. Just as we must be inexorable in refusing to base our ethic on religion, and still less on theology, so must we be equally determined in repudiating the claim often put forward, that morality is a department of physics, or in any way founded on physical science. The scientific professor, feeling the ground strong under his feet, and sure of the applause of his very numerous public, has made a bold bid for the control of the moral order. He has made a serious attempt to capture the ethical world, and to coerce morality into obedience to the inflexible formulae of physics. The evolutionist, in particular, is consumed with an irresistible desire to stretch the ethical ideal on his procrustean couch and to show how, like everything else, it has been the subject of painfully slow growth and development, and that when the stages of that growth have been accurately ascertained by research into the records of the past, the essence of morality is fully explained. Originally non-extant, it has become at length, after aeons of struggle, the chief concern of man, the "business of all men in common," as Locke puts it, all of which philosophy is tantamount to saying, that morality is merely a flatter of history. When you know its history, you know everything, very much as a photographer might claim to exhaustively know an individual man, because he had photographed him every six months from his cradle to his grave. A very inadequate philosophy of ethic, this.