§ 172. It is natural to approach so deliberate and calculating a philosophy from the stand-point of the problems which it proposes to solve. One of these is the epistemological problem of the relation between the state of knowledge and its object. Naturalism and absolute realism side with common-sense in its assumption that although the real object is essential to the valid state of knowledge, its being known is not essential to the real object. Subjectivism, on the other hand, maintains that being is essentially the content of a knowing state, or an activity of the knower himself. Absolute idealism proposes to accept the general epistemological principle of subjectivism; but to satisfy the realistic demand for a standard, compelling object, by setting up an _absolute knower_, with whom all valid knowledge must be in agreement. This epistemological statement of absolute idealism is its most mature phase; and the culminating phase, in which it shows unmistakable signs of passing over into another doctrine. We must look for its pristine inspiration in its solution of another fundamental problem: that of the relation between the absolute and the empirical. Like absolute realism, this philosophy regards the universe as a unitary and internally necessary being, and undertakes to hold that being accountable for every item of experience. But we have found that absolute realism is beset with the difficulty of thus accounting for the fragmentariness and isolation of the individual. The contention that the universe must really be a rational or perfect unity is disputed by the evident multiplicity, irrelevance, and imperfection in the foreground of experience. The inference to perfection and the confession of imperfection seem equally unavoidable. Rational necessities and empirical facts are out of joint. [Sidenote: The Greek Philosophers and the Problem of Evil. The Task of the New Absolutism.] § 173. Even Plato had been conscious of a certain responsibility for matters of fact. Inasmuch as he attached the predicate of reality to the absolute perfection, he made that being the only source to which they could be referred. Perhaps, then, he suggests, they are due to the very bounteousness of God. "He was good, and no goodness can ever have any jealousy of anything. And being free from jealousy, he desired that all things should be as like himself as possible."[352:2]