How do you remember things? Memories are stored in the mind, of course: we make “mental notes,” set long lists to song, use practice drills, and more. But how does it work, exactly? Where do memories reside; how are they created and retrieved when needed; and what relationship do they have to body and soul? These are questions that ancient and medieval thinkers pondered for both theoretical and practical reasons, in a tradition of ars memorativa.