Money exists without relying on promises, trust, or another moral capacity of self-restraint and money is not created by agreement. If this situation is changed, commerce could not be the central of modern societies  In Della moneta, Galiani constantly described the effects of human actions in terms of providential rewards and punishments. He used the term providence to reconcile the historical dynamic of commercial progress with a set of fixed moral rules that lay at the core of successful human interaction. Galiani presented any moralistic dismissals of natural price formation and self-interested profit-seeking as reproaches to the way God intended human societies to function. Providential mechanisms were also involved in the history of money, the rise and fall of states in both antiquity and modernity and regulated the development of cultural characteristics of the dominant societies in the course of time. Throughout history man constantly reshaped the fictional moral beliefs, thereby creating the mental preconditions for commercial society. During the period of being a diplomat in Paris, Galiani wrote "Dialogues sur le commerce des bleds", which emphasized the importance for the regulation of commerce—an argument that opposed the physiocrats, who advocated complete freedom. This book was published in 1770 and Galiani indicated in this book that there are increasing returns to manufacturing, and diminishing returns to agriculture, and the wealth of a nation depends on manufacturing and trade. Although approving of the edict of 1764 liberalizing the grain trade, Galiani rejected much of the physiocratic analysis, notably its "land theory of value". His 1770 piece also provided a quite modern analysis of balance of payments. In the Dialogues, Galiani described that wheat can be seen at two different aspects. The distinctions between two different aspects is important, as a product of the earth, wheat can be considered both commerce and economic legislation. As a product of first necessity, wheat is a symbol of social order and belongs to administration. As Galiani put it in an illuminating way, ‘As soon as supplying [wheat] is the concern of administration, it is no longer an object of commerce’. Correspondingly, ‘It is certain that what is sensible and useful from one standpoint, becomes absurd and harmful from another’. Galiani believed that there are many shocks to economy, which can cause disequilibrium and it takes long time for the restoration of equilibrium. He thanked that something instead of the nature law needed to face the challenge and shocks. Administration dealt with the ‘sudden movements’ of the economy, such as shortages in the wheat supply.