But there is a small difficulty to overcome; a thing of this kind does not depend upon our own will. One can sit down at any time and read, but not--think. It is with thoughts as with men: we cannot always summon them at pleasure, but must wait until they come. Thought about a subject must come of its own accord by a happy and harmonious union of external motive with mental temper and application; and it is precisely that which never seems to come to these people. One has an illustration of this in matters that concern our personal interest. If we have to come to a decision on a thing of this kind we cannot sit down at any particular moment and thrash out the reasons and arrive at a decision; for often at such a time our thoughts cannot be fixed, but will wander off to other things; a dislike to the subject is sometimes responsible for this. We should not use force, but wait until the mood appears of itself; it frequently comes unexpectedly and even repeats itself; the different moods which possess us at the different times throwing another light on the matter. It is this long process which is understood by _a ripe resolution_. For the task of making up our mind must be distributed; much that has been previously overlooked occurs to us; the aversion also disappears, for, after examining the matter closer, it seems much more tolerable than it was at first sight. And in theory it is just the same: a man must wait for the right moment; even the greatest mind is not always able to think for itself at all times. Therefore it is advisable for it to use its spare moments in reading, which, as has been said, is a substitute for one's own thought; in this way material is imported to the mind by letting another think for us, although it is always in a way which is different from our own. For this reason a man should not read too much, in order that his mind does not become accustomed to the substitute, and consequently even forget the matter in question; that it may not get used to walking in paths that have already been trodden, and by following a foreign course of thought forget its own. Least of all should a man for the sake of reading entirely withdraw his attention from the real world: as the impulse and temper which lead one to think for oneself proceed oftener from it than from reading; for it is the visible and real world in its primitiveness and strength that is the natural subject of the thinking mind, and is able more easily than anything else to rouse it. After these considerations it will not surprise us to find that the thinking man can easily be distinguished from the book-philosopher by his marked earnestness, directness, and originality, the personal conviction of all his thoughts and expressions: the book-philosopher, on the other hand, has everything second-hand; his ideas are like a collection of old rags obtained anyhow; he is dull and pointless, resembling a copy of a copy.