In philosophy, at least, it is difficult, or rather impossible to draw a hard and fast line which shall demarcate ethical from non-ethical characters,—to separate them from other intellectual and reasonable motives. Kant, as we know, attempted to do so: but with the result that he was forced to add a doubt whether a purely moral act could ever be said to exist(57); or rather to express the certainty that if it did it was for ever inaccessible to observation. All such designations of the several “factors” or “moments” in reality, as has been hinted, are only _a potiori_. But they are misused when it is supposed that they connote abrupt and total discontinuity. And Kant, after all, only repeated in his own terminology an old and inveterate habit of thought:—the habit which in Stoicism seemed to see sage and foolish utterly separated, and which in the straiter sects of Christendom fenced off saint absolutely from sinner. It is a habit to which Hegel, and even his immediate predecessors, are radically opposed. With Herder, he might say, “Ethics is only a higher physics of the mind(58).” This—the truth in Spinozism—no doubt demands some emphasis on the word “higher”: and it requires us to read ethics (or something like it) into physics; but it is a step on the right road,—the step which Utilitarianism and Evolutionism had (however awkwardly) got their foot upon, and which “transcendent” ethics seems unduly afraid of committing itself to. Let us say, if we like, that the mind is more than mere nature, and that it is no proper object of a merely natural science. But let us remember that a merely natural science is only a fragment of science: let us add that the _merely_ natural is an abstraction which in part denaturalises and mutilates the larger nature—a nature which includes the natural mind, and cannot altogether exclude the ethical.