Bab 1298: The Quest For Evolution.

Any one of his conjectures could be why he didn't gain any information about her evolution from the soul fragment. But if it were the first, it would show that despite her confidence in her soul fragments, the great mother knew to keep some things confidential. That may mean that the colony that formed the great mother is not as united as he thought. 

He thought to himself, "It doesn't matter now. If she can do it, then so can I. I already know the requirements for the evolution of the soul. The law of the soul and a suitable primal. All I just need is to find a primal."

According to the law of the soul, the soul can continuously evolve. This is not a new or unprecedented acknowledgment. It is even acknowledged in the world of manifestation. The evolution of the soul is a feature of the path of perfection and divinity. It is how the path of the soul leads to the awakening of the soul after the body-forging stage.