Mona Lisa he stresses that the images never existed. Kemp is also adamant that Cotte’s images in no way establish the existence of a separate underlying portrait. On 21 August 1911, the painting was stolen from the Louvre. The theft was not discovered until the next day, when painter Louis Béroud walked into the museum and went to the Salon Carré where the "Mona Lisa" had been on display for five years, only to find four iron pegs on the wall. Béroud contacted the head of the guards, who thought the painting was being photographed for promotional purposes. A few hours later,
Paris in the 18th century in his career Voltaire had been welcomed to the salon of Madame Pompadour, and had been granted a government pension, which he did not touch for twelve years; the scholar and co-author of the first Encyclopedia, d'Alembert had been provided an apartment in the Louvre; and Rousseau had been feted and welcomed to the homes of the nobility. But under Louis XVI the royal attitudes changed. Voltaire very rarely visited Paris between 1760 and his death in 1784. Rousseau was allowed to return to Paris from exile only on the condition that he not publish any of his work. Nonetheless,