It may perhaps seem strange to a modern reader to be told that, in this very important respect, Thucydides, Plato, and Aristotle are sounder in their method than the whole long line of political thinkers and statesmen up to our own day. Let the reader who doubts it turn to the texts. He will find that all the three writers whom I have named toiled at the study of human nature before they set pen to paper. The _Republic_ opens with several books of psychological analysis, no doubt at times a little fantastic in its attempts at premature classification, but full of life and reality, and not only Greek reality but human reality. Aristotle precedes his work on _Politics_, in which he embodied the results of a study of all the available political and constitutional material of his day--for a Greek could work like a modern German or American thesis-grubber when he tried--with a book on _Ethics_ which is still regarded, quite rightly, as a standard work for the modern student. As for Thucydides, his knowledge of men, the fruit of patient experience deepened by disappointment, is felt behind every line of his book, as one descries it in the features of his undegenerate descendant Venizelos. Turn now to the moderns. Where in Hobbes or in Bentham, in Locke or Burke or Rousseau, in the individualists or the Socialists, the Hegelians or the anarchists, do we find, until quite recently, a really wide and open-minded attempt to see man as he is? Our ears are assailed by a chorus of catchwords, based on some arbitrary and ephemeral estimate of men's reactions to outward events and institutions. Men argue backwards and forwards as to whether 'human nature can be changed', whether man is guided solely by self-interest, or is only waiting to be set free from sordid cares to be guided solely by his love for his fellows, whether fear or hope, custom or the sense of adventure, form his natural and most compelling spur to action. Meanwhile in the great debate, in Burke's _Reflections_ as in Marx's _Capital_, in Maine and Mill and Mazzini, as among the hacks who vulgarize their results in text-books and election literature, man as he is has vanished behind a cloud of doctrine or verbiage. We need the simplicity, or cynicism, of the Greeks to recall us to realities.