What does Baba say are the main obstacles that prevent a person from attaining self-luminous knowledge, even for those who are wise?

Baba warns that knowledge can be hidden by ignorance, much like a clean mirror is covered by dust or fire is obscured by smoke. In Chapter 50, he identifies lust and anger as primary culprits that conceal this knowledge. He compares the power of Maya, or illusion, to moss covering water or Rahu eclipsing the moon, showing how it can cover even self-luminous knowledge. Baba notes that because of these forces, even great knowers can have their intellects corrupted and fall into downfall, as they know the remedies but fail to hold firm against their whims.