With such thinkers differing so markedly in their methods, the ordinary man is left bewildered. He may indeed decide that effort or no effort makes little difference. Let us, however, look to the psychology of the question, and see whether we can find any guiding principle.

Spencer, defending his method, says: “A solution reached in the way described, is more likely to be true than one reached in pursuance of a de­ter­mined effort to find a solution. The de­ter­mined effort causes perversion of thought. When endeavoring to recol­lect some name or thing which has been for­got­ten, it frequently happens that the name or thing sought will not arise in con­scious­ness; but when attention is relaxed, the missing name or thing often suggests itself. While thought continues to be forced down certain wrong turnings which had originally been taken, the search is vain; but with the cessation of strain the true association of ideas has an op­por­tunity of asserting itself. And, similarly, it may be that while an effort to arrive forthwith at some answer to a problem, acts as a distorting factor in con­scious­ness and causes error, a quiet contemplation of the problem from time to time, allows those proclivities of thought which have probably been caused unawares by experiences, to make themselves felt, and to guide the mind to the right conclusion.”

Spencer’s first argument, that an effort to recollect something is often without results, while the thing is remembered later when we are not trying to think of it, is true as to fact. But it does not show that the effort was unfruitful. As pointed out in the discussion of association, one idea is associated with not only one other idea but with an entire group. This may give a possible explanation of why it is so often difficult to recollect anything when we make a determined effort. The attempt partly arouses a whole cluster of ideas, each of which tends to return, but is prevented from doing so by all the others. It is analogous to a crowd of people all struggling to get through a narrow doorway. They cause such a jam that for a time no one succeeds. When the pushing and jostling cease one person at a time is able to pass through. When effort is abandoned, probably all but one of the associates become dormant, and this one slides into con­scious­ness at the slightest provocation.

Whether or not this explanation is true, it is a fact that though an effort may not produce results at the time, still if it had not been made, the associate which finally comes to mind would probably never have occurred at all. The reader has possibly found that when learning some skilled movement, such as bicycle riding, skating or swimming, his first attempts seemed without result, but after an interval of a week or a month, when trying again, he suddenly discovered that he could do what he wanted from the very start. Surely no one would contend that this could happen without the previous effort!

I must also question Spencer’s remark that “with the cessation of strain the true association of ideas has an opportunity of asserting itself.” The brain has no hidden mechanism by which it can separate the true from the false. To be sure, if we use no effort the most usual and strongest associations will be more likely to assert themselves, and it may be that often these will have more warrant than unusual and weaker associations. Outside of this, there is no superiority.

But the main reason why we cannot follow the method of Herbert Spencer is that we are not all Herbert Spencers. His thought naturally tended to serious and useful channels. Consequently he did not have to force it there. If the reader is one of those rare and fortunate beings whose thoughts run only to useful subjects, and who always con­cen­trate from pure spontaneous interest, I sincerely advise him not to force himself. And if such a being happens to be reading the present chapter I assure him he is criminally wasting his time, and that he should drop the book or turn to the next chapter with all possible haste. But if the reader numbers himself with the miserable majority whose minds are ever running away with them, he will find it necessary to use effort in thinking—at least for a while.

One remark of Spencer is undoubtedly true. This is “that an effort to arrive forthwith at some answer to a problem, acts as a distorting factor in con­scious­ness and causes error.” And here, strange to say, his practice is in substantial agreement with the apparently opposite method of John Stuart Mill. For note that Mill speaks of “again and again returning to it

Both imply their agreement rather than state it outright; Spencer by his use of the word “forthwith” and Mill by his words “again and again.” Here the practice of both differs from that of the vast majority of men. Yet neither thinker seemed to be clearly conscious how it differed. The average man (that mythical creature!) when he has just been confronted with a problem, may wrestle with it with all the vigor of a great thinker. But as he sees difficulties multiplying about him, he gradually becomes more and more discouraged. Finally he throws up the problem in disgust, contenting himself with the reflection that it cannot be solved, or that it will take somebody who knows more than he to solve it.

A real thinker, however, if confronted with the same problem, will look for a solution from every possible viewpoint. But failing an answer he will not give up. Instead he will let the subject drop for a while, say a couple of weeks or perhaps longer, and then refer to it again. This time he will find that certain obscurities have become a little clearer; that certain questions have been answered. He will again attack his puzzle with energy. And if he does not obtain a complete solution he will once more put it aside, returning to it after another interval, until finally a satisfactory solution presents itself.

You may fail to see any difference between thinking for two hours separated by two weeks, and thinking for two consecutive hours. As an experiment, then, the next time you come across a puzzle which you fail to solve at first tilt, write down all the unsatisfactory solutions suggested, and all the questions, difficulties and objections met with. You may leave this for a few weeks. When you return to it a few of the difficulties will look less formidable, and some of the questions will have practically answered themselves. (Of course some of the difficulties may look more formidable, and a few new questions may have arisen.) If a solution is not found at the second attempt, the problem may again be sent to your mental waiting room. But if it is only of reasonable difficulty a solution is bound, soon or late, to be discovered.