Since according to common agreement there is nothing outside and separate in existence from sensible spatial magnitudes, the objects of thought are in the sensible forms, viz. both the abstract objects and all the states and affections of sensible things. Hence (1) no one can learn or understand anything in the absence of sense, and (2) when the mind is actively aware of anything it is necessarily aware of it along with an image; for images are like sensuous contents except that they contain no matter."
"So out of sense-perception comes to be what we call memory, and out of frequently repeated memories of the same thing develops experience; for a number of memories constitute a single experience. From experience again -- i.e., from the universal now stabilized in its entirety within the soul, the one beside the many which is a single identity within them all -- originate the skill of the craftsman and the knowledge of the man of science, skill in the sphere of becoming and knowledge in the sphere of being."