The superior faculty is therefore the more thorough organisation of that which is elsewhere less harmoniously systematised. Opinion is fragmentary and partial: it begins abruptly and casually from the unknown, and runs off no less abruptly into the unknown. Knowledge, on the contrary, is unified: and its unity gives it its strength and superiority. The powers which thus exist are the subjective counterparts of objectively valuable products. Thus, reason is the subjective counterpart of a world in which all the constituents are harmonised and fall into due relationship. It is a product or result, which is not psychologically, but logically or morally important. It is a faculty, because it means that actually its possessor has ordered and systematised his life or his ideas of things. Psychologically, it, like unreason, is a compound of elements: but in the case of reason the composition is unendingly and infinitely consistent; it is knowledge completely unified. The distinction then is not in the strictest sense psychological: for it has an aesthetic or normative character; it is logical or ethical: it denotes that the idea or the act is an approach to truth or goodness. And so, when Butler or Plato distinguishes reason or reflection from appetites and affections, and even from self-love or from the heart which loves and hates, this is not exactly a psychological division in the narrower sense. That is to say: these are, in Plato’s words, not merely “parts,” but quite as much “kinds” and “forms” of soul. They denote degrees in that harmonisation of mind and soul which reproduces the permanent and complete truth of things. For example, self-love, as Butler describes it, has but a partial and narrowed view of the worth of acts: it is engrossing and self-involved: it cannot take in the full dependence of the narrower interest on the larger and eternal self. So, in Plato, the man of heart is but a nature which by fits and starts, or with steady but limited vision, realises the larger life. These parts or kinds are not separate and co-existent faculties: but grades in the co-ordination and unification of the same one human nature. (i.) Psychology and Epistemology.