Dr. David Vik's book 'The Culture Secret' emphasizes the importance of cultivating a robust corporate culture, which is essential for attracting and retaining engaged employees and loyal customers. It outlines key components such as vision, purpose, business model, unique factors, and values that contribute to a successful culture, ultimately leading to improved profitability and growth. The book advocates for inspired leadership and employee empowerment as vital elements in maintaining and evolving corporate culture.