By 'subjective' the world is in the way of understanding what is due to personal prepossession, void of general acceptability, a product of individual feeling, peculiar and inexplicable tastes. By subjective Kant means what belongs to _the_ subject or knowing mind as such and in its generality: what is constitutive of intelligence in general, what sense and intellect are _semper et ubique_. Into the question how the human being came to have such an intellectual endowment--the question which Nativist psychology is supposed to settle in one way; and Evolutionism in another--Kant does not enter; he merely says where there is knowledge, there is a knower,--a knowing subject _so_ constituted. It comes after all to the tautology that the reality we know is a known reality: that knowledge is a growth in the knower, and not an accidental product due to things otherwise unknown. The predicate (or category) _'is'_ is contained, implicit, in the predicate '_is known,_' or what '_is_' puts implicitly, '_is known_' puts explicitly and truly. By 'appearance' the world understands a sham, or at least somewhat short of reality. By appearance Kant understands a reality which has appeared: or, as that is going too far, a something which is real so far as it goes (a _prima facie_ fact), but only a candidate for admission into the circle of reals. And such reality depends on nothing more than its thorough-going coherence with other appearances, its explaining the rest, and being in turn explained by them,--its absolute adaptation to its environment. And this environment all lies in the common field of consciousness, and in the one correlating and unifying apperceptivity of the ego,--that Ego which is the inseparable comrade, vehicle, and judge, of all our perceptions. It is the appearance--but as yet not the appearance _of_ something,--but rather an appearance _to_ or _for_ something. By an 'idea' the world in general understands what it is sometimes ready to call a _mere_ idea. And by a mere idea is meant something which is _not_ reality, but a peculiarity of an individual mind, or group of minds-a fancy, without objective truth:--something, we may even add, which for many people is located in their own head or brain, cut off by blank bone-walls from the open air of real being. By idea (representation, _Vorstellung_) Kant meant that an object is always and essentially the object of a mind: always relative to a subject consciousness, and implying it, just as a subject consciousness always implies an object.