The text casually titled Images from the Region of the Pueblo Indians of North America was originally a lecture intended to prove that its author was sane. Aby Warburg delivered his talk on April 21, 1923, before an audience of inmates, doctors and guests at the Bellevue sanatorium in Kreuzlingen, Switzerland. His lecture is fascinating. In it, Warburg recounts his youthful journey to the American West as the story of civilization told in reverse.(New Republic)