What is the philosophical basis for overcoming feelings of separation and suffering according to Sai Baba's teachings?

The philosophical solution to suffering, as detailed in Chapter 14, is the realization of Oneness. Feelings of separation and sorrow arise from duality—the mistaken belief that "I am different, and people are different." Baba teaches that this intellect, which establishes duality, is pure ignorance and is the cause of the cycle of birth and death. To overcome this, one must surrender to the single Essence that is the same in one's own body as it is in the entire universe. Chapter 14 advises that by turning away from ignorance and abandoning duality, one attains the peaceful state of non-duality, where nothing is seen as separate.