Dr. Seuss' infectious rhymes, his blue-tufted, strong-willed creatures, and his knack for pithy, roundabout plots have been entertaining children--and adults--for decades. And as biographer Donald Pease shows, the seemingly haphazard trajectory of Theodor Geisel's life bears a close resemblance to the zigzag plot lines of his children's books--by turns a cartoonist, ad agency artist (for Flit bug killer), author, caricaturist, documentary-film writer...