The moment of the past cannot be kept, however beautiful. The moment of the present cannot be held, however enjoyable. The moment of the future cannot be caught, however desirable. But the mind is desperate to fix the river in place: Possessed by ideas of the past, preoccupied with images of the future, it overlooks the plain truth of the moment.
The one who can dissolve her mind will suddenly discover the Tao at her feet, and clarity at hand.