Keep off your thoughts from things that are past and done.
For thinking of the past wakes regret and pain.
Keep off your thoughts from thinking what will happen;
To think of the future fills one with dismay.
Better by day to sit like a sack in your chair;
Better by night to lie, a stone in your bed.
When food comes, open your mouth.
When sleep comes, close your eyes.
Translated by Arthur Walley.