What does Sai Baba say about argumentation, and who is considered unfit for self-knowledge?

Sai Baba provides a stern warning against a mind inclined towards argumentation. In chapter 2, he states that where there is a mind for argumentation, there is an abundance of ignorance and Maya. He advises against establishing one's own side or refuting another's, labeling such dualistic explanations as a 'useless effort.' According to Sai, a person with such a disposition, filled with bad thoughts and false logic, is not fit for self-knowledge because ignorance 'devours them.' He concludes that for such individuals, there is no happiness in this world or the next, only unhappiness everywhere and always.