Vincent spent a year (8 May 1889 to 16 May 1890) in an asylum in Saint-Rémy de Provence and painted many of his most famous works there.
Corner in the Garden of Saint‑Paul Hospital, A by Vincent van Gogh
The essence and definition of painting is, the imitation of visible objects, by means of form and colors: Wherefore the more, forcibly and faithfully painting imitates nature, the more directly and rapidly does it lead us to its end, which is to deceive the eye; and the surer proofs does it give us of its true idea.