Montagne Sainte-Victoire at L'Estaque. A run of paintings of this mountain from 1880 to 1883 and others of Gardanne from 1885 to 1888 are sometimes known as "the Constructive Period". Despite the strained relationship, Hortense was the person who was most often portrayed by Cézanne. From the early 1870s to the early 1890s, 26 paintings of Hortense are known. She endured the strenuous sessions motionless and patiently. In October 1886, after the death of his father, Cézanne, his mother and sisters inherited his estate, which included the Jas de Bouffan estate, so that Cézanne's financial situation became much easier. "My father was a brilliant man," he said in retrospect, "he left me an income of 25,000 francs." By 1888 the family was in the former manor, Jas de Bouffan, a substantial house and grounds with outbuildings, which afforded a new-found comfort. , this house, with much-reduced grounds, is now owned by the city and was open to the public on a restricted basis. Exhibition at Les XX 1890 and first solo exhibition in Paris in 1895 Cézanne lived in Paris and increasingly in Aix without his family. Renoir visited him there in January 1888 and they worked together in Jas de Bouffan's studio. In 1890, Cézanne contracted diabetes; the illness made it even more difficult for him to deal with his fellow human beings. Cézanne spent a few months in Switzerland with her and his son Paul in the hope that the troubled relationship with Hortense could be stabilized. The attempt failed, so he returned to Provence, with Hortense and Paul fils going to Paris. Financial need prompted Hortense's return to Provence but in separate living quarters. Cézanne moved in with his mother and sister. In 1891 he turned to Catholicism. In the same year he exhibited three of his works at the group Les XX in Brussels. The Société des Vingt, short Les XX or Les Vingt, was an association founded around 1883 by Belgian artists or artists living in Belgium, including Fernand Khnopff, Théo van Rysselberghe, James Ensor and the siblings Anna and Eugène Boch. In May 1895 he attended Monet's exhibition at the Durand-Ruel Gallery with Pissarro. He was enthusiastic but later, significantly, identified 1868 as Monet's strongest period, when he was even more influenced by Courbet. With his fellow student from the Académie Suisse, Achille Emperaire, Cézanne went to the area around the village of Le