The book "The Quartet: Orchestrating the Second American Revolution, 1783-1789" by Joseph J. Ellis highlights George Washington's struggle with his aggressive instincts following the American Revolution. It took Washington over a year to learn how to manage these instincts effectively as he transitioned from a military leader to a political figure tasked with unifying a fledgling nation. This internal conflict was a significant part of his personal growth and leadership development.

Washington's journey underscores the challenges leaders face when shifting roles, especially in a time of national uncertainty. His ability to eventually control and refine his aggressive tendencies played a crucial role in guiding the early republic towards stability and governance, illustrating both the difficulties and the importance of personal discipline in effective leadership.