# Hypomnēma > A **hypomnēma** (Greek ὑπόμνημα) is a written aid to memory — a notebook, commentary, or personal record used to collect thoughts, quotations, and reflections. In antiquity it served both as a practical tool for recalling knowledge and, as Michel Foucault noted, as a philosophical exercise in self-formation: a form of writing through which one shapes and cultivates the self. This is a place where I'll sometimes dump my mind, in an attempt to honor the definition above. Keep in mind, it will be a wild assortment of things. There is not much yet, just some programming [katas](katas) and some [rehosted](rehosted) content. I'm using [Obsidian](https://obsidian.md/) as an editor, can't recommend it enough.