When the Way is lost there is virtue. When virtue is lost there is benevolence. When benevolence is lost there is righteousness. When righteousness is lost there are rituals.
Words spoken about the Way have no taste. When looked at, there's not enough to see. When listened to, there's not enough to hear. When used, it is never exhausted.
Seal the openings, shut the doors, and until your last day you will not be exhausted. Widen the openings, interfere, and until your last day you will not be safe.
Without stirring abroad, One can know the whole world; Without looking out of the window One can see the way of heaven. The further one goes The less one knows.