How does he grapple with the idea of God, which is the essence of his philosophy? Here it is: "The first principle as pure self-activity, must necessarily have the permanent form of _knowing of knowing_, for this root form of self-consciousness is entirely self-related. The self sees the essential self, the self-activity is the object of self." We are instructed! God _knows he knows_, and that is the very essence of his divinity--that is enough. In this profound expression we have the consummation of philosophy, for the purpose of his philosophy is to know God, "_Nunc dimittis_," we need to know nothing more,--_we know we know_, and so we are God's. "This line of thought brought up at every step some phase of Plato and Aristotle," said the professor, and we are thankful that he did not resurrect any more of the puerilities of Athenian ignorance. "Knowing of knowing" is quite enough, which he repeats to be emphatic. "All true being is in the form of the infinite or self-related, and related to itself as the _knowing of knowing_. All beings that are not this perfect form of self-knowing, either potentially or actually, must be parts of a system or world order which is produced in some way by true being or self-knowing. All potential self-knowings contain within themselves the _power to realize_ their self-knowledge, and are therefore free beings." This is a broad hint that men are gods and lands us in that realm of folly of which Mrs. Eddy is the presiding genius. She is much indebted to the Concord philosophers for lending their respectability to her labyrinth of self-contradictions. One quotation more, to give the essence of this Concord philosophy. "The Divine Being exists for himself as one object. This gives us the Logos, or the only-begotten. The Logos _knows himself_ as personal perfection, and also as _generated_, though in an infinite past time. This is its recognition of its first principle and its unbegotten 'Father.' But whatever it knows in self-consciousness, it creates or makes to exist," and more of the same sort. We are overwhelmed with such a flood of wisdom! How the professor attained so intimate, familiar, and perfect a knowledge of the infinite power, to which the fathomless depths of starry infinity are as nothing, is a great mystery. Was it by _Kabbala_ or by _Thaumaturgy_, or did he follow the sublime instructions of his great brother Plato, and thrust his head through the revolving dome of the universe, where the infinite truth is seen in materialized forms.