In 1886 he went to Paris to join his brother Théo, the manager of Goupil's gallery. In Paris, van Gogh studied with Cormon, inevitably met Pissarro, Monet, and Gauguin, and began to lighten his very dark palette and to paint in the short brushstrokes of the Impressionists. His nervous temperament made him a difficult companion and night-long discussions combined with painting all day undermined his health. He decided to go south to Arles where he hoped his friends would join him and help found a school of art. Gauguin did join him but with disastrous results. Near the end of 1888, an incident led Gauguin to ultimately leave Arles. Van Gogh pursued him with an open razor, was stopped by Gauguin, but ended up cutting a portion of his own ear lobe off. Van Gogh then began to alternate between fits of madness and lucidity and was sent to the asylum in Saint-Remy for treatment.