Is the power of perception common to the reasonable soul and to the irrational soul, and will we grant that it possesses the memory of sense-objects and of intelligible things? To recognize that it is one and the same power which equally perceives both kinds of things, is already to take one step towards the solution of the problem. But if we divide this power into two, there will nevertheless still be two kinds of memory; further, if we allow two kinds of memory to each of the two souls (the rational and the irrational), there will be four kinds of memory. MEMORY IS NOT IDENTICAL WITH FEELING OR REASONING. Are we compelled to remember sensations by sensibility, whether it be the same power which feels sensation, and which remembers sensation, or is it also discursive reason which conceives and remembers conceptions. But the men who reason the best are not those who also remember the best; and those who have equally delicate senses, do not all, on that account, have an equally good memory. On the contrary, some have delicate senses, while others have a good memory, without however being capable of perceiving equally well. On the other hand, if feeling and remembering be mutually independent, there will be (outside of sensibility) another power which will remember things formerly perceived by sensation, and this power will have to feel what it is to remember.[148] MEMORY BELONGS TO IMAGINATION. (To solve all these difficulties) it may be stated that nothing hinders the admission that the actualization of the sensation produces in memory an image, and that the imagination, which differs (from sensation), possesses the power of preserving and recalling these images. It is indeed imagination in which sensation culminates; and when sensation ceases, imagination preserves its representation. If then this power preserve the image of the absent object, it constitutes memory.[149] According as the image remains for a longer or shorter time, memory is or is not faithful; and our memories last, or are effaced. Memory of sense-objects therefore belongs to the imagination. If this faculty of memory be possessed by different persons in unequal degrees, this difference depends either on the difference of forces, or on practice (or exercise), or on the absence or presence of certain bodily dispositions which may or may not influence memory, or disturb it.[150] But elsewhere we shall study the question further. INTELLECTUAL CONCEPTIONS ARE NOT ENTIRELY PRESERVED BY IMAGINATION.