Chapter 37 mentions a single principle that pervades everything. What is this principle, and why do people fail to perceive it?

The Shri Sai Satcharitra, in Chapter 37, explains the existence of a single, unifying principle that pervades all of creation, "from the creator (Brahma) down to the smallest blade of grass, in all moving and non-moving things." This principle is the same in all realms, without any difference. The reason people fail to perceive this unity is due to a soul deluded by ignorance. The text clarifies that when this formless principle is combined with worldly adjuncts or forms (upadhis), it appears to the ignorant mind as if it were not Brahman, leading them to see themselves as separate from this ultimate reality.