“The question of the minimum house is the question of the basic minimum of space, air, light, and heat which is necessary to man. . . . Man from a biological viewpoint needs improved conditions of ventilation and lighting and only a small quantity of living space, especially if this is organized in a technically correct manner.”

—Walter Gropius, Die Soziologische Grundlagen der Minimalwohnung in Die Wohnung f’r das Existenzminimum, 3rd edition, 1933.