=Feeling and Knowing.=--Since the intensity of a feeling state is conditioned by the amount of resistance, an intense state of feeling is likely to be accompanied by a lowering of intellectual activity. For this reason excessive hunger, heat or cold, intense joy, anger or sorrow, are usually antagonistic to intellectual work. The explanation for this seems to be that so much of our nervous energy is consumed in overcoming the resistance in the centres affected, that little is left for ordinary intellectual processes. This does not, of course, imply that no one can do intellectual work under such conditions; nor that the intellectual man is always devoid of strong feelings, although such is often the case. Occasionally, however, a man is so strongly endowed with nervous energy, that even after overcoming the resistance being encountered, he still has a residue of energy to devote to ordinary intellectual processes. =Feeling and Will.=--Although, as pointed out in the last paragraph, there is a certain antagonism between knowing and feeling, it has also been seen that every experience has its knowing as well as its feeling side. Because of this co-ordination, the qualities of our feeling states become known to us, or are able to be distinguished by the mind. As a result of this recognition of a difference in our feeling states, we learn to seek states of pleasure and to avoid states of pain or, in other words, our mere states of feeling become desires. This means that we become able to contrast a present feeling with other remembered states, and seek either to continue the present desired state or to substitute another for the present undesirable feeling. In the form of desire, therefore, our feelings become strong motives, which may influence the will to certain lines of action. SENSUOUS FEELINGS While the sensations of the special senses, namely, sight, sound, touch, taste, and smell, have each their affective, or feeling, side, a minute study of these feelings is not necessary for our present purpose. It may be noted, however, that in the more intellectual senses, namely, sight, hearing, and touch, feeling tone is less marked, although strong feeling may accompany certain tactile sensations. In the lower senses of taste and smell, the feeling tone is more pronounced. Under muscular sensation we meet such marked feeling tones as fatigue, exertion, and strain, while associated with the organic sensations are such feelings as hunger and thirst, and the various pains which usually accompany derangement and disease of the bodily organs. Some of these feelings are important, because they are likely to influence the will by developing into desires in the form of appetites. Many sensuous feelings are important also because they especially warn the mind regarding the condition of the organism. EMOTION