A doctor who was consulted in an effort to help Dolly overcome her drinking problem suggested a scheme to Sloan: he was to start a diary in which he would include his fondest thoughts of her, with the expectation that she would surreptitiously read it and be freed of her disabling fear that Sloan would leave her. Spanning the period from 1906 to early 1913, the diary soon grew beyond its initial purpose, and its publication in 1965 supplied researchers with a detailed chronicle of Sloan’s activities and interests and a portrait of the pre-war art world.
His students respected him for his practical knowledge and integrity, but feared his caustic tongue; as a well-known painter who had nonetheless sold very few paintings, he advised his students, “I have nothing to teach you that will help you to make a living.” He disdained careerism among artists and urged his pupils to find joy in the creative process alone.