In Aristotle, of course, there is no trace of supernatural influence. The Furies, which drive their victim into sin first and then punishment, are no longer ‘viper-tressed goddesses with eyes and mouth aflame,’ but those evil thoughts which harbour within the impure soul. In this, as in all other points, to arrive at Aristotle is to reach the pure atmosphere of scientific and modern thought. But while he rejected pure necessitarianism in its crude form as essentially a _reductio ad absurdum_ of life, he was fully conscious of the fact that the will is not a mysterious and ultimate unit of force beyond which we cannot go and whose special characteristic is inconsistency, but a certain creative attitude of the mind which is, from the first, continually influenced by habits, education and circumstance; so absolutely modifiable, in a word, that the good and the bad man alike seem to lose the power of free will; for the one is morally unable to sin, the other physically incapacitated for reformation. And of the influence of climate and temperature in forming the nature of man (a conception perhaps pressed too far in modern days when the ‘race theory’ is supposed to be a sufficient explanation of the Hindoo, and the latitude and longitude of a country the best guide to its morals {57}) Aristotle is completely unaware. I do not allude to such smaller points as the oligarchical tendencies of a horse-breeding country and the democratic influence of the proximity of the sea (important though they are for the consideration of Greek history), but rather to those wider views in the seventh book of his _Politics_, where he attributes the happy union in the Greek character of intellectual attainments with the spirit of progress to the temperate climate they enjoyed, and points out how the extreme cold of the north dulls the mental faculties of its inhabitants and renders them incapable of social organisation or extended empire; while to the enervating heat of eastern countries was due that want of spirit and bravery which then, as now, was the characteristic of the population in that quarter of the globe. Thucydides has shown the causal connection between political revolutions and the fertility of the soil, but goes a step farther and points out the psychological influences on a people’s character exercised by the various extremes of climate—in both cases the first appearance of a most valuable form of historical criticism. To the development of Dialectic, as to God, intervals of time are of no account. From Plato and Aristotle we pass direct to Polybius.