What are the main obstacles to attaining knowledge and spiritual progress identified in Chapter 17?

Chapter 17 identifies several significant obstacles on the spiritual path. The primary one is Maya, or beginningless ignorance, which is described as a false imposition, as illusory as a mirage or silver in a shell. Furthermore, the chapter warns that desires for seen and unseen enjoyments, along with hope and cravings, must be dug out by the roots. Specific internal hindrances mentioned are lust and anger, which are so disruptive they can instantly derail the processes of listening, contemplation, and meditation. A restless heart distracted by greed will not find peace.