What details about Sai Baba's early character and habits are mentioned in Chapter 39?

Chapter 39 provides a brief but insightful glimpse into Sai Baba's disposition in his early years. The chapter notes that at the age of eighteen, he already had a habit of seeking solitude. It also emphasizes his complete fearlessness, mentioning that he would sleep anywhere at night without fear. The reason provided for this fearlessness is his advanced spiritual state: he 'saw the Lord everywhere.' This description from Chapter 39 suggests his early attainment of a state of non-duality and detachment from worldly concerns.