To know how little one knows is to have genuine knowledge. Not to know how little one knows is to be deluded. Only those who know when they are deluded can free themselves from such delusion. The intelligent people are not deluded, because they know and accept their ignorance as ignorance, and thereby have genuine knowledge.
The Way of Heaven does not complete, and yet it skillfully achieves victory. It does not speak, and yet it skillfully responds to things. It comes to you without your invitation.