Smith cannot, accordingly, be regarded as the herald of dawning industrialism. He clung to agriculture with all the tenacity of his nature, and no opportunity of showing his preference was ever missed. The difficulties of agriculture are quite beyond those of any other craft. “After what are called the fine arts, and the liberal professions, however, there is perhaps no trade which requires so great a variety of knowledge and experience.”[157] Not only is it more difficult, but it is also more useful. Between agriculture, manufacture, and commerce he draws a long comparison (to which we shall have to make reference again) purporting to show that of all employments agriculture is the most profitable field of investment, and the one most in accord with the general interest. For the more progressive nations “the natural course of things” would seem to suggest the investment of capital firstly in agriculture, in the second place in industry, and finally in foreign trade. The whole of Book III is an endeavour to show how the policy of European nations had for many centuries been hostile to agriculture and how the natural order had been inverted in the interests of merchants and artisans. Agriculture had always been the victim. In his theory of taxation he shows how a portion of the taxes on profits and wages ultimately falls upon property. In his discussion of duties on imported corn—those duties which aroused the indignation of Ricardo against the landlords—he reveals the same partiality. And he even goes the length of saying that it is not because of their personal interest, but owing solely to a badly conceived imitation of the doings of merchants and manufacturers, that “the country gentlemen and farmers of Great Britain so far forgot the generosity which is natural to their station, as to demand the exclusive privilege of supplying their countrymen with corn and butchers’-meat.”[158] Smith’s preference for agriculture and agriculturists need not be further insisted upon. Despite his own theory of division of labour, he still cherished a secret regard for the Physiocratic prejudice. He never subjected agriculture to the indignity of equal treatment along with other forms of economic activity. In his work at least it still retains its ancient pre-eminence. II: THE “NATURALISM” AND “OPTIMISM” OF SMITH In addition to the conception of the economic world as a great natural community created by division of labour, we can distinguish in Smith’s work two other fundamental ideas, around which his more characteristic theories group themselves. First is the idea of the spontaneous origin of economic institutions, and secondly their beneficent character—or, more briefly, Smith’s naturalism and optimism. The two ideas, though frequently intermingled and sometimes even confused in Smith’s work, must be carefully distinguished by the historian of economic thought.