Cut out doors and windows for the house. The holes make it useful.
The skillful traveller leaves no traces of his wheels.
The sage does not act and therefore does not fail, does not seize and therefore does not lose.
Love is the greatest link that we have with those who have temporarily left us.
Don't impose your will through manipulation of aggressive emotions and actions.
When the uncarved wood is split, its parts are put to use. When the sage is put to use, he becomes the head.