inquiry. Hence the imperfection of all human knowledge. The supreme good is attainable; it is not attained. God is the immutable good, and justice the rule of the universe. "The vital principle of Plato's philosophy," says Ritter, "is to show that true science is the knowledge of the good, is the eternal contemplation of truth, or ideas; and though man may not be able to apprehend it in its unity, because he is subject to the restraints of the body, he is nevertheless permitted to recognize it imperfectly by calling to mind the eternal measure of existence by which he is in his origin connected." To quote from Ritter again:-- "When we review the doctrines of Plato, it is impossible to deny that they are pervaded with a grand view of life and the universe. This is the noble thought which inspired him to say that God is the constant and immutable good; the world is good in a state of becoming, and the human soul that in and through which the good in the world is to be consummated. In his sublimer conception he shows himself the worthy disciple of Socrates.... While he adopted many of the opinions of his predecessors, and gave due consideration to the results of the earlier philosophy, he did not allow himself to be disturbed by the mass of conflicting theories, but breathed into them the life-giving breath of unity. He may have erred in his attempts to determine the nature of good; still he pointed out to all who aspire to a knowledge of the divine nature an excellent road by which they may arrive at it." That Plato was one of the greatest lights of the ancient world there can be no reasonable doubt. Nor is it probable that as a dialectician he has ever been surpassed, while his purity of life and his lofty inquiries and his belief in God and immortality make him, in an ethical point of view, the most worthy of the disciples of Socrates. He was to the Greeks what Kant was to the Germans; and these two great thinkers resemble each other in the structure of their minds and their relations to society. The ablest part of the lectures of Archer Butler, of Dublin, is devoted to the Platonic philosophy. It is at once a criticism and a eulogium. No modern writer has written more enthusiastically of what he considers the crowning excellence of the Greek philosophy. The dialectics of Plato, his ideal theory, his physics, his psychology, and his ethics are most ably discussed, and in the spirit of a loving and eloquent disciple. Butler represents the philosophy which he so much admires as a contemplation of, and a tendency to, the absolute and eternal good. As the admirers of Ralph Waldo Emerson claim that he, more than any other man of our times, entered into the spirit of the Platonic philosophy, I introduce some of his most striking paragraphs of subdued but earnest admiration of the greatest intellect of the ancient Pagan world, hoping that they may be clearer to others than they are to me:--