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Cover of Principles by Ray Dalio

Principles

Ray Dalio

  • 592 pages · about 10 hours
  • First published 2017
  • 6 editions
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1 About this 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.

Summary adapted from Wikipedia (CC BY-SA 4.0)

Good for readers who want: a true life story, business, and a long read.

  • Biography
  • Ethics
  • Business & economics
  • Conduct of life
  • Success
  • Success in business
  • Decision making
  • Management

2 About Ray Dalio

Born 1949

Raymond Thomas Dalio (born August 8, 1949) is an American billionaire investor and founder of Bridgewater Associates, one of the world's largest hedge funds. Dalio is the author of the 2017 book, Principles: Life & Work, about corporate management and investment philosophy and The Changing World Order on why nations succeed and fail. As of June 2026, he has a net worth of $21.5 billion, which ranks 126th on the Bloomberg Billionaire Index.

Bio adapted from Wikipedia (CC BY-SA 4.0)

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