According to the text, what is more important for spiritual progress: intellectual knowledge or heartfelt devotion?

The text strongly emphasizes the importance of heartfelt devotion and faith over mere intellectual or bookish knowledge. Chapter 14 questions the use of "Bhajan without love" and compares "knowledge without experience" to a forehead without a kumkum mark, suggesting they are incomplete and just "exhaustion." The story of Cholkar is introduced specifically to show how the Great Guru was pleased with his devotion, even though Cholkar had never seen or visited Sai. This highlights that a true connection with God is found through faith, not just through reading books without understanding their meaning.