XL.
E. L. E. B. translation
To learn never to waste our time is perhaps one of the most difficult virtues to acquire.
A well-spent day is a source of pleasure. To be constantly employed, and never asking, "What shall I do?" is the secret of much goodness and happiness.
[pg 083]
Begin, then, with promptitude, act decisively, persevere; if interrupted, be amiable, and return to the work unruffled, finish it carefully—these will be the signs of a virtuous soul.