Author: Arthur Yeung and Dave Ulrich
Publication year: 2019
Editorial: Active Company
“Start with Why” by Simon Sinek explores the power of purpose in business inspiration and leadership. Sinek argues that the most successful organizations and leaders do not just focus on what they do or how they do it, but first establish the why, that is, their purpose and core beliefs. By highlighting examples from leading companies, the author offers a practical approach to motivating teams and customers by communicating a clear and authentic purpose.

Main ideas:
- The golden circle:
- Sinek introduces the concept of the “Golden Circle,” which consists of three layers: Why? As? That? He notes that effective leaders start with the why, communicating the organization's reason for being before addressing the hows and whats. This communication hierarchy resonates more deeply and authentically with internal and external audiences.
- The Law of Diffusion of Innovation:
- The author explores the Law of Diffusion of Innovation, arguing that mass acceptance of an idea or product occurs when it connects with people who share similar values and beliefs. By starting with the why, organizations can attract those who share their vision, creating a solid foundation for sustainable growth.
- Inspirational leadership:
- Sinek highlights the importance of inspirational leadership based on why. Leaders who communicate a clear and authentic purpose can motivate and mobilize their teams, generating deeper and more sustainable engagement. Provides examples of successful leaders who have applied this approach to achieve lasting impact and success.