MEMORY BELONGS TO THE SOUL ALONE.
Doubtless we will have to acknowledge that there are affections which pass from the body into the soul; but there are also affections which belong exclusively to the soul, because the soul is a real being, with characteristic nature and activities. In this case, the soul must have desires, and recall them, remembering that they have, or have not been satisfied; because, by her nature, she does not form part of the things which are (as Heraclitus said) in a perpetual flow. Otherwise, we could not attribute to the soul coenesthesia (or, common feeling), conscience, reflection, or the intuition of herself. If she did not possess them by her nature, she would not acquire them by union with the body. Doubtless there are activities which the soul cannot carry out without the assistance of the organs; but she herself possesses the faculties (or "powers") from which these activities are outgrowths. Besides, she, by herself, possesses other faculties, whose operations are derived from her alone. Among these is memory, whose exercise is only hindered by the body. Indeed, when the soul unites with the body, she forgets; when she separates from the body, and purifies herself, she often recovers memory. Since the soul possesses memory when she is alone, the body, with its changeable nature, that is ever subject to a perpetual flow, is a cause of forgetfulness, and not of memory; the body therefore is, for the soul, the stream of Lethe (or forgetfulness). To the soul alone, therefore, belongs memory.