But first of all, it is needful to meet a serious objection. If it is in fact true, as seems to be usually conceded since the appearance of Bücher's brilliant _Entstehung der Volkswirtschaft_[2]--to say nothing here of the thesis since formulated with such extreme radicalism by W. Sombart[3]--that the economic organisation of the Middle Ages has no aspect to which one can rightly apply the term capitalistic, then our thesis is limited wholly to modern times and there can be no thought of introducing into the discussion the centuries preceding the Renaissance. But whatever may be the favor which it still enjoys, the theory which refuses to perceive in the medieval urban economy the least trace of capitalism has found in recent times ever increasing opposition. I will not even enumerate here the studies which seem to me to have in an incontrovertible manner established the fact that all the essential features of capitalism--individual enterprise, advances on credit, commercial profits, speculation, etc.--are to be found from the twelfth century on, in the city republics of Italy--Venice,[4] Genoa,[5] or Florence.[6] I shall not ask what one can call such a navigator as Romano Mairano (1152-1201), if, in spite of the hundreds of thousands of francs he employed in business, the fifty per cent. profits he realized on his operations in coasting trade, and his final failure, one persists in refusing to him the name of capitalist. I shall pass over the disproof of the alleged ignorance of the medieval merchants. I shall say nothing of the astonishing errors committed in the calculations, so confidently offered to us as furnishing mathematical proof of the naïveté of historians who can believe the commerce of the thirteenth and fourteenth centuries to have been anything more than that of simple peddlers, a sort of artisans incapable of rising even to the idea of profit, and having no views beyond the day's livelihood.[7] Important as all this may be, the weak point in the theory which I am here opposing seems to me to lie especially in a question of method. Bücher and his partizans, in my opinion, have, without sufficient care, used for their picture of the city economy of the Middle Ages the characteristics of the German towns and more particularly the German towns of the fourteenth and fifteenth centuries. Now the great majority of the German towns of that period were far from having attained the degree of development which had been reached by the great communes of northern Italy, of Tuscany, or of the Low Countries. Instead of presenting the classical type of urban economy, they are merely examples of it incompletely developed; they present only certain manifestations; they lack others, and particularly those which belong to the domain of capitalism. Therefore in presenting as true of all the cities of the Middle Ages a theory which rests only on the observation of certain of them, and those the least advanced, one is necessarily doing violence to