The Wealth of Nations by Part 5 Chapter 1 Page 277

This is a species of instruction of which the object is not so much to render the people good citizens in this world, as to prepare them for another and a better world in a life to come. The teachers of the doctrine which contains this instruction, in the same manner as other teachers, may either depend altogether for their subsistence upon the voluntary contributions of their hearers, or they may derive it from some other fund to which the law of their country may entitle them; such as a landed estate, a tithe or land tax, an established salary or stipend. Their exertion, their zeal and industry, are likely to be much greater in the former situation than in the latter. In this respect the teachers of new religions have always had a considerable advantage in attacking those ancient and established systems of which the clergy, reposing themselves upon their