National audience, The too bright personality of Isaac René Le Chapelier, ever combined with the abolition of corporations by the French Revolution, could only reject in the shadow that of his father, Guy-Charles (1711-1789), a rennian lawyer who had become a substitute for the hired public prosecutors, the Syndics des States de Brittany, from 1752 to his death. As a co-impact of history, this function makes it necessary to take a close look at the general reform of the Breton trade communities, a median solution finally chosen by Louis XVI after the disgrace of Turgot and the abandonment of the idea of outright abolition. The Edit promulgated for Brittany in 1781 is still quite paradoxical, despite the undeniable rationalisation of the procedure for gaining control: it provides for a very sharp increase and redistribution of admission fees mainly to the Royal Treasury, as well as a transformation of a number of previously sheltered professions into ‘sworn’ professions in a province where, traditionally, the corporative phenomenon is quantitatively limited and rather qualitatively spared by the growing problems observed elsewhere. Guy-Charles Le Chapelier puts forward a number of arguments to justify and support the determined opposition expressed jointly by the Parliament and the States of Brittany: from an economic point of view, the planned reform would be as archaic as it would be harmful, as it was contrary to the freedom then virtually stifled in official dogma by physiocrats; its implementation would thus help to ruin many professions, in particular that of pushers. From a more political and legal point of view, the author does not hesitate to rely on the historic tax rights and immunities of the former duché, formally guaranteed in 1532, at the Brittany Union in France. This clearly shows the boundary of the communion of thought between Guy-Charles Le Chapelier and his son: while the member of the Constituent Assembly strongly perpetuates his father’s land-based hostility towards the corporative principle, on the other hand, in the name of the new National Unit, he is equally radically moving away from his attachment to the idea of any provincial autonomy... she is breathing!