Complex sentence: Xorphitus explains that this was because the nature of man was to be divided, and to know all things constituted a breach of this natural law, so he was naturally separated into two beings, each containing half of the universe's knowledge.
Split into simpler sentences: Xorphitus explains that this was because the nature of man was to be divided, and to know all things constituted a breach of this natural law. As such, he was naturally separated into two beings, each containing half of the universe's knowledge.