This is the first book to encompass all of Wolfli's work, including his writings and musical compositions. The authors approach the phenomenon Wolfli from a variety of perspectives that delineate and clarify the structure of the artist's work and assess its connections to modern art. The chronology and composition of his work are presented in the context of art history. Text analyses bring new understanding to his writing. His cosmic experiences and the elaboration of his number systems are seen in relation to philosophical concepts.