ABSTRACT
The final stage of this study is a description of the functioning and propagation of economic crises. Having analysed destabilising shocks in general, the details of their consequences must now be taken into account. With this goal in mind, Boisguilbert expanded his horizon to include all economic agents. He states that in reality informational problems help to explain all behavioural patterns, not just that of the rentiers. The question of the information of agents also concerns the formation, nature and economic effects of their expectations in the various markets. We must explain why all behaviour is stabilising in a system of free trade. Finally, in conclusion we shall return to the issue of the role of the state and economic policy.
