"Friedensreich Regentag Dunkelbunt Hundertwasser (December 15, 1928 – February 19, 2000) was an Austrian painter and architect. Born Friedrich Stowasser in Vienna, he became one of the best-known contemporary Austrian artists, although controversial, by the end of the 20th century.
Hundertwasser’s original and unruly artistic vision expressed itself in pictorial art, environmentalism, philosophy, and design of facades, postage stamps, flags, and clothing (among other areas). The common themes in his work utilised bright colours, organic forms, a reconciliation of humans with nature, and a strong individualism, rejecting straight lines.
He was fascinated with spirals, and called straight lines "the devil’s tools". He called his theory of art "transautomatism", based on Surrealist automatism, but focusing on the experience of the viewer, rather than the artist." (Wikipedia, http://en.wikipedia.org/wiki/Friedensreich_Hundertwasser, access on 20/10/2009)