When the Convention organised the Trial of King Louis XVI, held between the December 10 and 26, 1792, Calès published his « "Opinion on the judgment of the king" », and then voted on January 15, 1793 "« yes »" to the immediate Death of the King, without suspension nor ratification by the people. He notably declared solemnly to the Assembly: . This vote of Calès will be later reported in « "Ninety-Three" », the last novel written by Victor Hugo: