The document discusses the importance of having a clear sense of purpose or "why" (WHY) in business. It argues that people don't buy what a company does (WHAT) but why it does it. Having a clear WHY allows a company to inspire loyalty and avoid relying on short-term manipulations. It also discusses the need for consistency (HOW) between a company's stated WHY and its actions, culture, products and marketing in order to be authentic. Without a clear WHY, companies cannot differentiate themselves or maintain lasting success.