I'm trying to understand the Gita, but I heard there are subtle interpretations, like a symbol changing 'knowledge' to 'ignorance'. Can you explain this concept from the Satcharitra?

This is a profound point discussed in Chapter 50 of the Sai Satcharitra. The text references the Bhagavad Gita, specifically verse 4.34, and explains how a subtle grammatical mark called an 'Avagraha' before the word 'Jnana' (knowledge) can indicate its opposite, 'Ajnana' (ignorance). This highlights that without proper guidance, even sacred texts can be misunderstood. Chapter 50 suggests that to grasp these deeper meanings and avoid misinterpretation, one must push away flaws in their vision and approach the text with a pure heart, free from negative emotions and pride, ideally under the guidance of a Guru who can remove such doubt.