Artists do myriad things. Six of these things are discussed in this book by author Leonard Koren. This limited (and arbitrary) sampling is intended to emphasize how, in totality, the work of artists has a substance, spirit, and methodology different from that found in most other types of work. Highlights from the lives of seminal 20th-century artists, including Marcel Duchamp, John Cage, Richard Serra, Christo & Jean-Claude, Donald Judd, and On Kawara, are used to illustrate these six things.