Salon of 1767, consisting of thirteen paintings and a number of drawings, prompted Denis Diderot to write: "The ideas which the ruins awake in me are grand." Robert subsequently showed work at every Salon until 1802. He was successively appointed "Designer of the King's Gardens", "Keeper of the King's Pictures" and "Keeper of the Museum and Councilor to the Academy". Robert was arrested in October 1793, during the French Revolution. During the ten months of his detention at Sainte-Pélagie and Saint-Lazare he made many drawings, painted at least 53 canvases, and painted numerous vignettes of prison life on plates. He was freed one week after the fall of Robespierre. Robert narrowly escaped the guillotine when through error another prisoner with a similar name was guillotined in his place. Subsequently, he was placed on the committee of five in charge of the new national museum at the Palais du Louvre. The Revolution also resulted in the destruction of some of Robert's work; his painting Péché Cardinal (ca.1799) is one that is thought to be lost or destroyed in a fire. Robert had designed the decorations for a little theatre in the new wing at the location of the current staircase Gabriel in the Palace of Versailles. Designed to seat about 500, this theatre was built from the summer of 1785 and opened in early 1786. It was intended to serve as an ordinary court theatre, replacing the Theatre of the Princes Court which was too old and too small, but was destroyed during the time of Louis Philippe. A watercolour of Robert's design is in the National Archives in Paris. Robert died of a stroke on 15 April 1808. Style and legacy The quantity of his work is immense, comprising perhaps one thousand paintings and ten thousand drawings. The Louvre alone contains nine paintings by his hand and specimens are frequently to be met with in provincial museums and private collections. Robert's work has more or less of that scenic character which justified his selection by Voltaire to paint the decorations of his theatre at Ferney. His work was much engraved by the abbé de Saint-Non, with whom he had visited Naples in the company of Fragonard during his early days; in Italy his work has also been frequently reproduced by Chatelain, Linard, Le Veau, and others. He is noted for the liveliness and point with which he treated the subjects