Of all the material things to which this maxim could apply, of all the situations where this could lead to a more efficient use of scarce resources, the best place to apply it is to your own spare time.

If Burt Bacharach was right, there's a dearth of love in the world. But if there's one thing that there's just "too little of" for each of us, it's leisure time. And what we need is to make the most of what little we have.