Indeed, so completely did James think the emotions were explicable as the inner feeling of the complex organic sensations which go to make up each of them that he did not think it misleading to say "we feel sorry because we cry, angry because we strike, afraid because we tremble; we do not cry, strike, or tremble because we are sorry, angry, or fearful, as the case may be." Whether or not emotions are completely to be explained as the inner or subjective aspect of the complex of organic disturbances which accompany fear, rage, and the like, and which are caused immediately by the perception of the appropriate objects of these emotions, it is certainly true that emotional awareness and bodily disturbances are very closely connected.[1] [Footnote 1: Recent experiments by Dr. Cannon at Harvard have shown the specific bodily disturbances which accompany anger, fear, etc. In particular, Dr. Cannon, and others, have noted that in the emotional conditions of fear and anger the glands, located near the kidneys, discharge a fluid into the blood stream, which fluid stimulates the heart to activity, constricts the blood vessels of the internal organs, causes the liver to pour out into the blood its stores of sugar, and affects in one way or another all the organs of the body. The general effect is to put the body into a state of preparedness for the activities connected with the emotion, whether flight in the case of fear, attack as in the case of anger. This has led Professor Woodworth to define emotion as, at least in part, "the way the body feels when it is prepared for a certain reaction." See the latter's _Dynamic Psychology_, pp. 51-59.] Various attempts have been made to classify the emotions which are, in ordinary experience, infinitely subtle and complex. The subtlety and variety of emotion James explains as the result of the subtle and imperceptible differences in the complex of sensations which occur in any given situation. In general, it has been recognized that the emotions are very closely connected with the primary tendencies of man. McDougall, for example, says that each of the great primary impulses is accompanied by an emotion. Indeed, McDougall considers, as earlier noted, that the emotion is the affective or conscious aspect of an instinct which, at the same time, has a perceptual and impulsive aspect; that, in the case of fear, the perceptual aspect is the instinctive mechanism for recognizing objects of danger, the impulsive aspect is the tendency toward flight, and the affective aspect is the inner feeling or awareness of fear. Thus, for McDougall, the tender emotion is the emotional aspect of the instinct of pity, anger of the instinct of pugnacity, which is, as an impulse, the tendency to strike and destroy.