An Inquiry into the Nature and Progress of Rent, and the Principles by which it is Regulated

Malthus published a variety of pamphlets and tracts on economics in which he approached the problem of what determines price. In this pamphlet, published in 1815, he states "It may be laid down then as a general truth, that rents naturally rise as the difference between the price of produce and the cost of the instruments of production increases".