Antoninus does not treat of Politic. His subject is Ethic, and Ethic in its practical application to his own conduct in life as a man and as a governor. His Ethic is founded on his doctrines about man’s nature, the Universal Nature, and the relation of every man to everything else. It is therefore intimately and inseparably connected with Physic, or the nature of Things, and with Theology, or the Nature of the Deity. He advises us to examine well all the impressions on our minds and to form a right judgment of them, to make just conclusions, and to inquire into the meaning of words, and so far to apply Dialectic; but he has no attempt at any exposition of Dialectic, and his philosophy is in substance purely moral and practical. He says, “Constantly and, if it be possible, on the occasion of every Impression on the soul, apply to it the principles of Physic, of Ethic, and of Dialectic”: which is only another way of telling us to examine the impression in every possible way. In another passage (III. 11) he says, “To the aids which have been mentioned, let this one still be added: make for thyself a definition or description of the object which is presented to thee, so as to see distinctly what kind of a thing it is in its substance, in its nudity, in its complete entirety, and tell thyself its proper name, and the names of the things of which it has been compounded, and into which it will be resolved.” Such an examination implies a use of Dialectic, which Antoninus accordingly employed as a means towards establishing his Physical, Theological, and Ethical principles.