Book excerpt: Raised on a bankrupt farm along the Mississippi River, Allen E. Paulson would become owner of the Fortune 500 aerospace empire Gulfstream Aerospace Corporation. He began his career as an airplane mechanic, later setting world records as a pilot and developing unique military and civilian jets. Paulson was ambitious and reticent, generous and frugal, confident and dogged by self-doubt. His friends included U.S. presidents, Hollywood celebrities and famous aviators. He toasted and tangled with such business titans as Lee Iacocca and Teddy Forstmann--until life took him in another direction. Paulson played by the rules and took each success and setback in stride, always with a keen ethical sense and an unflagging entrepreneurial spirit.