It's not a sin to have selfish desires. But it is a sin to be incompetent

"As for the demon," Wang Xiao continued, "he indeed killed them, but could they control the demon?"

"If they had been strong, they would have survived."

"If they had been truly powerful, nothing would have happened from the very beginning."

"Just being wise isn't enough; being the most powerful is the key. It doesn't matter how you achieve it—whether through wisdom or sheer might—what matters is that you become the strongest."

"The man was wise, yes," Wang Xiao conceded, "but not wise enough to become the most powerful. His sin was in being weak."

Yue felt the weight in his words, sensing the truth in them.

But something still nagged at her, a question that needed answering. "Then what about the disciple girl?" she asked.