What does Baba identify as the primary hindrances to attaining the knowledge of Brahman?

Based on the wisdom shared in Chapter 17, the primary hindrances to attaining the knowledge of Brahman are ego, worldly attachments, and especially greed. The text states that the "ignorant tendency of the soul is the true worldly inclination." True knowledge only comes when the ego dissolves. Furthermore, Baba uses a powerful story to illustrate how obsession with wealth is a major obstacle. He states clearly that one whose mind is obsessed with children, cattle, and earning wealth cannot have the knowledge of Brahman. Chapter 17 concludes that greed and Brahman have an "eternal enmity," and if even a single trace of greed resides in the heart, all spiritual practices are rendered useless.