The Kirkbride Plan refers to a system of mental asylum design advocated by Philadelphia psychiatrist Thomas Story Kirkbride (18091883) in the mid19th century. Kirkbride developed his requirements based on a philosophy of Moral Treatment. The typical floor plan, with long rambling wings arranged en echelon (staggered, so each connected wing received sunlight and fresh air), was meant to promote privacy and comfort for patients. The building form itself was meant to have a curative effect, "a special apparatus for the care of lunacy, [whose grounds should be] highly improved and tastefully ornamented." The idea of institutionalization was thus central to Kirkbride's plan for effectively treating patients with mental illnesses.