Walter Isaacson (born May 20, 1952) is an American historian, journalist, and writer. He is the University Professor of History at Tulane University. He has been the President and CEO of the Aspen Institute, a nonpartisan educational and policy studies organization based in Washington, D.C., chairman and CEO of CNN and Managing Editor of Time. He has written biographies of Leonardo da Vinci, Steve Jobs, Benjamin Franklin, Albert Einstein, and Henry Kissinger.