In the book Simon Sinek speaks of golden circle is based on golden ratio. He lives in New York and teaches a graduate-level class in strategic communications at Columbia University. Books
Sinek Simon (2009).
com. His 2009 book on the same subject Start With Why: How Great Leaders Inspire Everyone to Take Action (2009) delves into what he says is a naturally occurring pattern grounded in the biology of human decision-making that explains why we are inspired by some people leaders messages and organizations over others.