Principles (book)

Principles: Life & Work is a 2017 book by hedge fund manager and author Ray Dalio based on principles he had developed while leading Bridgewater Associates. The Principles were also made into a short video series by the author. According to The New York Times, staff at Bridgewater were involved in the writing of the book.

The book was on The New York Times Best Seller List and was the top business book of 2017 on Amazon. Despite the book's commercial success and several notable endorsements, few people actually implement the principles.