How to Take Smart Notes by Sönke Ahrens — book cover

How to Take Smart Notes

Sönke Ahrens · 2017

How to Take Smart Notes (2017) is a book by Sönke Ahrens on productivity & habits. Sönke Ahrens reverse-engineers the Zettelkasten, the slip-box of index cards that let sociologist Niklas Luhmann publish 70 books, into one simple workflow that turns everyday note-taking into effortless writing, learning, and thinking.

11 min read · 8 chapters · Productivity

Why it’s on the shelf

It reframes note-taking from a chore you do while reading into the engine that does your thinking for you, the closest thing to a cheat code for anyone who writes to understand.

Two of the ideas you’ll keep

The Clif summary of How to Take Smart Notes pulls out 7 insights. Here are the first two.

  1. Sociologist Niklas Luhmann credited his staggering output, roughly 70 books and 400 articles, not to genius or discipline but to his Zettelkasten, a slip-box of some 90,000 index cards built at the unremarkable pace of a few notes a day.
  2. The system runs on three distinct note types: fleeting notes (quick, disposable reminders), literature notes (what you don't want to forget from a source, in your own words), and permanent notes (fully-formed ideas written for the slip-box). Only permanent notes are kept.

The other 5 — and the full 11-minute summary — are in the app.

What’s inside: 8 chapters

The whole summary runs about 11 minutes, read or listened to.

  1. The One Thing Nobody Tells You About Writing
  2. Luhmann's Slip-Box: A Second Brain That Talks Back
  3. Writing Is the Only Thing That Matters
  4. The Three Kinds of Notes
  5. From the Bottom Up: How Structure Emerges
  6. Elaboration, Not Collection: How We Actually Learn
  7. Following Interest: Workflow Over Willpower
  8. Let the Slip-Box Do the Work

Finish How to Take Smart Notes tonight.

Read or listen to the full summary in about 11 minutes, then keep the ideas with a minute of review a day. Start with the 2-minute quiz — no card required.