Irascible subjects, on hearing the name of their enemy, at the mere thought can revive the rising feelings of anger. The timid person shudders and turns pale when recalling the danger once incurred. The lover, thinking of his mistress, completely revives the state of love. If we compare the recollection of an extinct passion with the occurrence to the mind of a passion still existing, we shall clearly perceive the difference between intellectual and affective memory, between the mere recollection of the circumstances and the recollection of the emotion as such. It is a serious error to assert that only the conditions of the emotion can be revived, not the emotional state itself. I now only touch on this question, to which I shall return. Several of my correspondents affirm that the memory of an emotion affects them as strongly as the emotion itself, which I have no difficulty in believing. Does not the recollection of a foolish action make one blush? One asserts that “her representation of emotions is more acute than the emotions themselves, and that she can recall them much better than visual, auditive, and other sensations.” But a few detailed observations will make the nature of true affective memory clearer. Littré relates that, at the age of ten, he lost a young sister under very painful circumstances. He felt acute grief at the time; “but a boy’s sorrow does not last long.” At an advanced age this grief suddenly returned, without apparent cause. “Suddenly, without wish or effort on my part, by some phenomenon of affective automnesia, this same event reproduced itself with feelings no less painful, certainly, than those I had experienced at the moment of its occurrence, and which went so far as to bring tears into my eyes.” It was several times repeated in the course of the following days; then it ceased and gave place to the habitual recollection, _i.e._, to the purely intellectual form of memory.[103] ----- Footnote 103: _Revue positive_, 1877, p. 660. ----- It is natural to suppose that emotional revival must be of frequent occurrence in poets and artists. M. Sully-Prudhomme, whose philosophical aptitudes are well known, has favoured me with a written communication on this subject, from which I extract some passages, with his permission.