American Painting and its Tradition by John C. Van Dyke

A plain man of the business world, knowing nothing of the peculiar manifestations of the artistic mind, would be very apt to wonder over the mental make-up of a George Inness. An artist's way of looking at things is never quite sensible to the man in the street. It is too temperamental, too impulsive; and Inness was supertemperamental even for an artist. When he expressed himself in paint he was very sane; but when he argued, his auditors thought him erratic. And not without reason. He was easily stirred by controversy, and in the heat of discussion he often discoursed like a mad rhapsodist. His thin hands and cheeks, his black eyes, ragged beard, and long dark hair, the dramatic action of his slight figure as he walked and talked, seemed to complete the picture of the perfervid visionary.

He was always somewhat hectic. As a boy he was delicate, suffered from epilepsy, and was mentally overwrought. His physician had nothing to recommend but fresh air. As a man, one of his hearers over the dinner-table, after listening to his exposition of the feminine element in landscape, or some allied theme, said: "Mr. Inness, what you need is fresh air. " Inness used to tell this story about himself with a little smile, as though conscious of having appeared extravagant. As for fresh air in the sense of out-of-doors, he knew more about it than all his business acquaintances put together; but in the sense of its clearing the vision so that he could see things in a matter-of-fact light, it was wholly unavailing. He was born with the nervous organization of the enthusiast. That is not the best temperament imaginable for a practical business man.