In 1601, he published five more plays: the tragedies L'Ecossaise (on Mary Stuart), Les Lacènes, David ou l'Adultère, Aman, and the pastoral La Bergerie.
In the history of economic thought, it is the first use of 'political economy' in the title of a work claiming to be a treatise.
It challenged Aristotle's position on the independence of politics from other social life, including economic activities.
It also developed some major elements of subsequent Mercantilist thought, such as the value of productive labor use and wealth acquisition in promoting political stability.
Unable to hold the city of Sancerre, Montchrestien returned to Normandy to attempt a raise troops, but on the night of October 7, 1621, he was discovered in an inn at Les Tourailles, near Falaise, and was killed.