In his work On Memory and Reminiscence, Aristotle explores the nature of memory and how it works. He differentiates between two types of memory: active and passive. Active memory is when we actively recall something, while passive memory is when we remember something without consciously trying to do so. Aristotle also discusses the role of reminiscence in our lives, arguing that it helps us to understand the world and ourselves better. Read in English, unabridged.