With a like ardour he prosecuted in the Council the condemnation of the thesis of Jean Petit concerning the lawfulness of tyrannicide.

In things temporal as well as spiritual he advocated uniform obedience and the respect of established authority.

In one of his sermons he likens the kingdom of France to the statue of Nebuchadnezzar, making the merchants and artisans the legs of the statue, "which are partly iron, partly clay, because of their labour and humility in serving and obeying...." Iron signifies labour, and clay humility.

All the evil has arisen from the King and the great citizens being held in subjection by those of low estate.[1131] [Footnote 1129: Launoy, _Historia Navarrici Gymasii_, book iv, ch.

v.
J.B.Lecuy, _Essai sur la vie de Jean Gerson, chancelier de l'eglise et de l'universite de Paris, sur sa doctrine, sur ses ecrits...._ Paris, 1832, 2 vols.