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The author states her motive for writing this book as follows: "This work . . . represents an attempt to survey the area of emotion and bring some order into a long neglected field. There is no adequate theory of emotion today, that is, no theory that can integrate the psychological, neurological, and physiological aspects of affective phenomena and place emotion in its proper perspective as a factor in personality organization. To formulate such a theory, it is necessary to review and evaluate the explanations given thus far, and to see what can be accepted in the light of recent research."
"If we take the adventure of ideas seriously, we are duty bound to screen the wheat from the chaff, even if that screening is a thankless task and takes time that could be devoted to original work. For the sake of our scientific integrity and for the sake of our obligation