Stéphane Breitweiser (born 1 October 1971) is a French art thief and author, notorious for his art thefts between 1995 and 2001. He admitted to stealing 239 artworks and other exhibits from 172 museums while travelling around Europe and working as a waiter, an average of one theft every 15 days. The Guardian called him "arguably the world's most consistent art thief." He differs from most other art thieves in that he did not steal for any profit motive. He was a self-described art connoisseur who stole in order to build a vast personal collection, particularly of 16th and 17th century masters. At his trial, the magistrate quoted him as saying, "I enjoy art. I love such works of art. I collected them and kept them at home." Despite the immensity of his collection, he was still able to recall every piece he stole. He interrupted the lengthy reading of his collection during his trial several times to correct various details. Thefts His first theft came in March 1995 during a visit to the medieval castle at Gruyères, Switzerland, with his then-girlfriend Anne-Catherine Kleinklauss. He became entranced with a small painting by Christian Wilhelm Dietrich, later saying, "I was fascinated by her beauty, by the qualities of the woman in the portrait and by her eyes. I thought it was an imitation of Rembrandt." With his girlfriend keeping watch, he worked out the nails holding the painting in its frame and slipped it under his jacket. He would use similar methods for at least 170 other museums for his thefts in the ensuing years. He would visit small collections and regional museums, where security was lax, and Kleinklauss would serve as his lookout as he cut the paintings from their frames. The most valuable work of art he stole was Sybille, Princess of Cleves by Lucas Cranach the Elder from a castle in Baden-Baden in 1995. Its estimated value at auction would be £5-£5.6 million. He cut it from its frame at a Sotheby's auction where it was to be sold. Although he amassed such a large collection of art, he never attempted to sell any of it for profit, instead enjoying thinking about how he was "the wealthiest man in Europe." It was all kept in his bedroom in his mother's house in Mulhouse, France. His room was kept in semi-darkness so the sunlight would not fade the paintings.