[Translated] The noble person says: Learning must never cease. Blue comes from the indigo plant, yet it is bluer than indigo. Ice is made from water, yet it is colder than water. Wood as straight as a plumb line may be bent into a wheel that is as round as if it were drawn with a compass, and, even after the wood has dried, it will not straighten out again because this is the way it has been bent. Thus wood marked by the plumb line will become straight, and metal that is put to the whetstone will become sharp. The noble person who studies widely and examines himself each day will become clear in his knowing and faultless in his conduct.