people that it becomes intolerable.)

5. What would be some of the pleasures of a walk in the desert?
(Coloring, change of seasons, trees along streams, appearance of any
grass.)

6. What about the effect of strong winds on the sand?

7. Imagining that some one has just crossed a desert, what dangers do
you think he has encountered, and how may he have escaped from them?

_The extent to which the supplementing should be carried_

From the preceding discussion it is clear not only that no important
topic is ever completely presented, but also that there is scarcely
any limit to the extent to which it may be supplemented. Men get new
thoughts from the same Bible texts year after year, and even century
after century. How far, then, should the supplementing be carried?

The maximum limit cannot be fixed, and there is no need of attempting
it. But there is great need of knowing and keeping in mind the minimum
limit; for in the pressure to hurry forward there is grave danger that
even this limit will not be reached.

What is this minimum limit? Briefly stated, it is this: There should
be enough supplementing to render the thought really nourishing,
_quickening_, to the learner. In the case of literature that will
involve some supplementing; and in the case of ordinary text-books it
will require a good deal more.