Friedrich Stowasser, born in Vienna in 1928, called himself Friedensreich Hundertwasser Regentag Dunkelbunt. True to the variety of his names, his practice spanned innumerable forms from painting and designing buildings to creating stamps and coins and his titles were many: environmental activist, philosopher, individualist, architect, ecologist, and visual artist. He was, in his own words, one who awakens identities. Across his work, Hundertwasser embraced the biomorphic, the irregular, and the irrational. Drawing inspiration from masters as varied as Gaudí and Gustav Klimt, his categorical rejection of the godless and immoral straight line, as well as his boycott of monotonous architecture, infused his bold, colorful works with a vitality that set him aside from most. Born of this fervent activism and unique universe was his own belief system, called transautomatism, which privileged the viewer s experience above all. Whether he was planting trees in urban settings or proclaiming the right to a window, Hundertwassers visions of a harmonious future between humans and nature continue to resonate with increasing urgency. Once out of print, this re-edition of a TASCHEN classic works in close collaboration with the Hundertwasser Foundation to present the Viennese master s oeuvre in all its different facets. Because his work is, by nature, virtually inseparable from his biography, private life, and political actions, a vivid portrait of Hundertwasser takes shape through his own lens. Excerpts from conversations between the author and the artist add immediacy and authenticity to this intimate monograph. If man walks in nature s midst, then he is nature s guest and must learn to behave as a well-brought-up guest.