He also wrote on the brain's role in health in "The Healing Brain" with David Sobel of Kaiser Permanente; the way in which human consciousness is unable to understand the fast paced modern world in "New World New Mind: Moving Toward Conscious Evolution" with Paul Ehrlich; and the way in which our current consciousness has developed in "The Axemaker's Gift", with James Burke, a book that addressed the way in which Western culture has developed and our minds along with it.