In, 1789, the unanimous vote of his fellow citizens deputed him to the Constituent assembly, composed of all that was most brilliant in the youth of France at that day.  Less attached in practice to the philosophy of Zeno than that of Epicurus, his name does not figure very conspicuously, but always appears at epochs, which show that he acted with the good and moderate.

His legislative functions being determined by the expiration of the Constituent Assembly, he was first appointed President of the Superior Civil court of the Department of Ain, and subsequently a Justice of the Court of Cassation, newly instituted; a man of talent, perfectly incorruptible and unhesitating in the discharge of his duty, he would have been precisely calculated for the place to which he had been appointed, had the warmth of political discussion made practicable the advice either of moderation or of prudence.  In 1793, he was Mayor of Belley, and passed in anxiety there, the season of the reign of Terror; whence he was forced to fly to Switzerland for an asylum against the revolutionary movement.  Nothing can better man, without a personal enemy, should be forced to pass in a foreign land the days he purposed to devote to the improvement of his country.

This is the point when the character of Brillat Savarin assumes its grandest proportions; proscribed, a fugitive, and often without pecuniary resources, frequently unable to provide for his personal safety, he was always able to console his companions in exile and set them an example of honest industry.  As time rolled on, and his situation became more painful, he sought to find in the new world a repose which Europe denied him; he came from Europe, and in Boston, New York, Philadelphia, and Hartford passed two years teaching the French language, and for a time playing the first violin in the orchestra of the Park Theatre.  Like many other emigres, Brillat Savarin ever sought to make the pleasant and the useful coincide.  He always preserved very pleasant recollection of this period of his life, in which he enjoyed, with moderate labor, all that is necessary for happiness, liberty sweetened by honest toil.  He might say all is well, and to be able to enjoy the breath of my native land would alone increase my happiness; he fancied that he saw brighter days with the commencement of Vendemiaire year 5, corresponding to September, of 1796.  Appointed by the Directory, as Secretary of the General in Chief of the Republican armies in Germany, then Commisary of the government in the department of the Seine and Oise, (this appointment he held at the epoch of the 18th Brumaire, in which France fancied she exchanged liberty for repose,) sustained by the Senate and the Court, Brillat Savarin passed the remaining twenty-five years of his life respected by his inferiors, loved by his equals, and honored by all.  A man of mind, a pleasant guest, with a deep fund of humor, he delighted every body.  His judicial labors did not at all interfere with the composition of this book, which he esteemed the great one of his life.