Look, my commonplace book is easily justified. I write and speak about things for a living. I need this resource. But so do you. You write papers, memos, emails, notes to friends, birthday cards, give advice, have conversations at dinner, console loved ones, tell someone special how you feel about them. All these are opportunities to use the wisdom... See more

To engage with a book’s ideas over time, readers must remember its details, and that’s already a challenge. One promising solution lies in spaced repetition memory systems, which allow users to retain large quantities of knowledge reliably and efficiently.