Moreover, in the elementary processes of the intellect the emotions play an important part. We have seen that attention largely follows interest, and interest results from feeling. Therefore our attention, and that which arises from it, is dependent largely upon the feelings. Thus feeling asserts its power in guarding the very outer gate of knowledge, and determines largely what shall or shall not enter therein. It is one of the constantly-appearing paradoxes of psychology, that while feelings have originally arisen from attention, it is equally true that attention depends largely upon the interest resulting from the feelings. This is readily admitted in the case of involuntary attention, which always goes out toward objects of interest and feeling, but is likewise true of even voluntary attention, which we direct to something of greater or more nearly ultimate interest than the things of lesser or more immediate interest. Sully says: "By an act of will I may resolve to turn my attention to something--say a passage in a book. But if, after the preliminary process of adjustment of the mental eye the object opens up no interesting phase, all the willing in the world will not produce a calm, settled state of concentration. The will introduces mind and object; it cannot force an attachment between them. No compulsion of attention ever succeeded in making a young child cordially embrace and appropriate, by an act of concentration, an unsuitable and therefore uninteresting object. We thus see that even voluntary interest is not removed from the sway of interest. What the will _does_ is to determine _the kind of interest_ that shall prevail at the moment." Again, we may see that memory is largely dependent upon interest in recording and recalling its impressions. We remember and recall most easily that which most greatly interests us. In proportion to the lack of interest in a thing do we find difficulty in remembering or recalling it. This is equally true of the imagination, for it refuses to dwell upon that which is _not_ interesting. Even in the reasoning processes we find the will balking at uninteresting subjects, but galloping along, pushing before it the rolling chair of interesting intellectual application.