----- 思想规律或形式逻辑
This book, then, is not a Psychology. It does not discuss the nature of the soul or of its faculties. It merely enumerates the principal acts of the intellect; and describes them as far as is necessary for the pur pose of this book, which is to lay down briefly and clearly the process of right thinking. This requires no encroachment upon the field of psychology. Questions which Should be discussed later on, in the course of philosophical studies, if introduced into an outline of correct thinking, only retard progress: firstly, because they are distracting; but especially because the mind is not prepared for them. Even after long discussions they are not understood by one who is just entering on the study of philosophy.
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