In isolation, he found nothing.
In nothing, he found the world.
In the world, he found discomfort.
In discomfort, he sought perfection.
In perfection, he saw himself. In himself, he saw a flaw that wasn't him. A flaw created by the mask he wore and the discomfort that came with encountering the lady of the Imperial family. Further tainting his soul was the vulnerability that came with no Qi Sense. The silent recollection that he had died to nothing. That he died without knowing. He developed his Qi Sense to prevent just that. Without it, he was incomplete.