His interest in philosophy, scientific exploration, and medicine shaped him into one of the greatest leaders of all time, as evidenced by the number of effective expeditions he led. Empress Wu Zetian, ...

Mayo, Anthony, and Nitin Nohria. In Their Time: The Greatest Business Leaders of the 20th Century. Boston, MA: Harvard Business School Press, 2005.

Strong leaders do not practice a one-size-fits-all leadership style. Instead, great leaders in history are remembered because they were advantageous during the time they lived and used all their ...