The social theorists of Utopia, my double explained, did not base their schemes upon the classification of men into labour and capital, the landed interest, the liquor trade, and the like. They esteemed these as accidental categories, indefinitely amenable to statesmanship, and they looked for some practical and real classification upon which to base organisation. [Footnote: In that they seem to have profited by a more searching criticism of early social and political speculations than our earth has yet undertaken. The social speculations of the Greeks, for example, had just the same primary defect as the economic speculations of the eighteenth century--they began with the assumption that the general conditions of the prevalent state of affairs were permanent.] But, on the other hand, the assumption that men are unclassifiable, because practically homogeneous, which underlies modern democratic methods and all the fallacies of our equal justice, is even more alien to the Utopian mind. Throughout Utopia there is, of course, no other than provisional classifications, since every being is regarded as finally unique, but for political and social purposes things have long rested upon a classification of temperaments, which attends mainly to differences in the range and quality and character of the individual imagination. This Utopian classification was a rough one, but it served its purpose to determine the broad lines of political organisation; it was so far unscientific that many individuals fall between or within two or even three of its classes. But that was met by giving the correlated organisation a compensatory looseness of play. Four main classes of mind were distinguished, called, respectively, the Poietic, the Kinetic, the Dull, and the Base. The former two are supposed to constitute the living tissue of the State; the latter are the fulcra and resistances, the bone and cover of its body. They are not hereditary classes, nor is there any attempt to develop any class by special breeding, simply because the intricate interplay of heredity is untraceable and incalculable. They are classes to which people drift of their own accord. Education is uniform until differentiation becomes unmistakable, and each man (and woman) must establish his position with regard to the lines of this abstract classification by his own quality, choice, and development....