Principles by Ray Dalio is a bestselling book by billionaire investor and entrepreneur Ray Dalio, founder of Bridgewater Associates. In it, Dalio shares the core principles that guided his success in building one of the world’s largest and most influential hedge funds.
The book is divided into three main sections: life principles, work principles, and the practical application of both in business and decision-making. Dalio introduces concepts such as “radical transparency” and “radical truth", which emphasise openness, honesty, and merit-based decision-making in both personal and professional environments.
Principles by Ray Dalio explains how complex systems—such as economies, organizations, and relationships—can be understood through structured thinking and repeatable rules. It also provides tools for improving decision-making, building effective teams, and achieving long-term goals.
Drawing from decades of experience, Dalio offers insights into investment strategy, leadership, and personal growth. The book combines autobiography with practical guidance, making it both a reflection on his journey and a manual for success in life and business.
