Back again in France by 1800, he boldly published in 1802 his Vrai sens du vote national pour le consulat a vie, in which he exposed the ambitious schemes of Bonaparte.
At Sens the Feast of the Ass was associated with the Feast of Fools, celebrated at Vespers on the Feast of Circumcision.
He adopted the new ideas, and in a pamphlet entitled Le Bon Sens attacked feudal privileges; he also submitted to the Constituent Assembly a scheme for the reorganization of the navy, but it was not accepted.
After the death of his wife in 1507 Du Prat had taken orders; he received the bishoprics of Valence, Die, Meaux and Albi, and the archbishopric of Sens (1525); in 1527 he became cardinal, and in 1530 papal legate.
He zealously combated the Tritheism of Roscellinus, but his own views on the Trinity were condemned by two councils (at Soissons 3' y (in 1 121 and at Sens in 1140).
After preliminary negotiations, in which Bernard was roused by Abelard's steadfastness to put forth all his strength, a council met at Sens (1141), before which Abelard, formally arraigned upon a number of heretical charges, was prepared to plead his cause.
St Bernard accused him of sharing the doctrines of Abelard (see Ep. 189, 195), and procured his condemnation by the council of Sens (I 140) at the same time as that of the great scholastic. This was perhaps no more than the outcome of the fierce polemical spirit of the abbot of Clairvaux, which led him to include all his adversaries under a single anathema.
See Kersaint's own works, Le Bon Sens (1789); the Rubicon (1789); Considerations sur la force publique et l'institution des gardes nationales (1789); Lettre a Mirabeau (1791); Moyens presentes a l'Assemblee nationale pour retablir la paix et l'ordre dans les colonies; also E.
In the decrees of the council of Sens (1485) - non caputia, sed almucia vel bireta tenentes in capite.
He became aspirant repetiteur at the lycee of Rheims in 1853, and after holding several intermediate positions was appointed in 1862 to the professorship of chemistry in Sens lycee, where he prepared the thesis on electromotive force which gained him his doctor's degree at Paris in the following year.