Louis Henry Sullivan (September 3, 1856 – April 14, 1924) was an American architect, and has been called a "father of skyscrapers" and "father of modernism." He was an influential architect of the Chicago School, a mentor to Frank Lloyd Wright, and an inspiration to the Chicago group of architects...
Design is not just what it looks like and feels like. Design is how it works.
To design is to communicate clearly by whatever means you can control or master.