The premise of "The 21 Laws of Leadership" is that leadership can be learned and it's based on principles and laws of nature. Once you understand the 21 laws and practice them you will improve and increase your leadership capability. It's only when you enhance your leadership ability can you truly increase your personal and professional effectiveness.
What I learned:
Each of The 21 Laws of Leadership principles transcend time. Leadership is leadership no matter which period of history it is practiced.