The way in which Brutalism emphasized the physical properties of building materials represented an update on Louis H. Sullivan’s famous ‘form follows function’ maxim, which had inspired an earlier wave of modernist architecture culminating in the International Style. But whereas International Style often favored a sleek, streamlined efficiency of construction – doing the most with the least – Brutalism was more likely to emphasize the brash abundance of its materials, drawing attention to the weight, density, and mass of concrete, steel, and stone.