Start With Why is the title of a 2009 🏷️#ted-talk and a subsequent book by 📝Simon Sinek arguing that the most enduring organizations, leaders, and movements begin from a clearly articulated purpose — the "why" — before working outward to how and what they do.
Sinek's central diagram, the "Golden Circle," is a three-ring structure with why at the center, surrounded by how, surrounded by what. Most organizations communicate outside-in (what they sell, how they do it, why it matters), and Sinek's claim is that the inside-out sequence — purpose first — is what produces lasting loyalty, talent magnetism, and decision clarity at scale. The TED Talk became one of the most-watched ever, and the book extended the thesis with case studies drawn from Apple, the Wright Brothers, and Martin Luther King Jr.
The frame has its critics — that the diagram is reductive, the case selection is post-hoc, and the "why" language can mask underspecified strategy. The underlying observation — that purpose-driven explanations outperform feature-driven ones in many decision contexts — has nonetheless become a standard reference in leadership and branding work.