“Don’t run back to the past, don’t anticipate the future. What’s past is left behind, the future has not arrived; and any present phenomenon you clearly discern in every case. The unfaltering, the unshakable: having known that, foster it. Today’s the day to keenly work—who knows, tomorrow may bring death! For there is no bargain to be struck with Death and his mighty horde. One who keenly meditates like this, tireless all night and day: that’s who has one fine night—so declares the peaceful sage.

And how do you run back to the past? …