The reasoning of Philosophical Ethics must not be confused with practical reflection. In the last we are led by instincts and impulses, by motives of which we are, for the most part, wholly unconscious, by thoughts and feelings the first origin of which we cannot designate. We follow the "positive morality" to which we have accustomed ourselves and which is, in part, an inheritance of our species. Ethics as an art precedes Ethics as a science; the aim of the latter is partly to show by what principles the former is guided, and partly to correct these principles. The ethical principle broadens out, thus, from the single moment of the individual life until it embraces the whole of mankind; but there are many points in the course of the development at which we can make a stand, and there may, therefore, be as many philosophical systems as there are larger or smaller totalities. The position of the man who holds fast consistently to a principle that determines the criterion by the family, the caste, the nation, a sect, as highest totality, is as unassailable as we have seen that of the individualist to be. The psychologic-historical evolution alone can bring us, through the changes which it produces in the feelings, beyond these criterions. In other words, every criterion has a psychologic-historical basis. He who is to recognize and carry out practically the principle of the greatest possible welfare, must be no egoist or individualist, no fanatical patriot or sectarian; this is the subjective condition necessary to the objective principle. The conscience which is to be regulated by the objective principle is always itself the condition of the recognition of this principle. A system which leaves this fact out of consideration takes on a dogmatic character. The basis of all ethical judgments is feeling. By this is not meant, however, that the standpoint of an individual cannot be influenced by argument; the feelings are always connected with concepts, and discussion of these concepts is both possible and must react upon them even if only very gradually. Conscience is not infallible in its application of the objective principle; a wider experience may show it to have erred. Conscience is highest authority, but still an authority which may continually perfect itself. The objective principle makes possible the mutual correction of different consciences and the self-correction of the conscience of the individual through self-judgment.