" In the first place, sensation (aisthesis) is a corporeal process which we have in common with animals, and in which the impression of an exterior object is transmitted to the soul. By means of this process, an image (phantasia) of the object is produced in the soul, or more precisely in the guiding part (hegemonikon) of the soul "

― Pierre Hadot , The Inner Citadel: The Meditations of Marcus Aurelius