Commonplace Book Template: A Simple Setup for Modern Readers

The commonplace book is one of the oldest knowledge tools in Western culture, and one of the most misunderstood. John Locke kept one. So did Thomas Jefferson, Ralph Waldo Emerson, and Virginia Woolf. Marcus Aurelius's Meditations - arguably the most influential self-help book ever written - started as commonplace entries in a personal journal.

Today, the concept gets buried under "second brain" tutorials that are ten times more complex than they need to be. The original idea was simple: keep a personal collection of the best ideas you encounter, organized well enough that you can find them again.

Here is a commonplace book template that takes 20 minutes to set up and stays useful for years.

What a commonplace book actually is

A commonplace book is a personal anthology of ideas. Not a diary (that tracks your days). Not a planner (that tracks your tasks). A commonplace book tracks reusable knowledge from external sources: quotes, arguments, frameworks, observations, and anything else that made you think.

The tradition goes back centuries. During the Renaissance and Enlightenment, students were explicitly taught to keep commonplace books as part of their education. John Locke even published a method for indexing one in 1706 (A New Method of a Common-Place Book), complete with a lettered indexing system that let you find entries without alphabetizing everything in advance.

The modern version does not need to be that formal. But it does need three things: a way to capture ideas, a way to find them again, and a reason to revisit them.

A lightweight commonplace book template

For every entry in your commonplace book, record five things:

  1. Source - Where did this come from? (Book, article, podcast, conversation, your own thinking.)
  2. The idea - The exact passage, quote, or insight. Keep the original wording when it is good. Paraphrase when you can say it more clearly.
  3. Why it matters - One sentence in your own words. This is the most important field. It forces you to think about the idea rather than just file it. As Sönke Ahrens writes in How to Take Smart Notes: "The slip-box is not a collection device. You need to think to add a note."
  4. Tags - One to three themes. Not book titles, not chapters. Broad topics: "decision-making," "writing," "psychology," "habits." You will search by theme, not by source.
  5. Next use - Where will you apply this? A project, a conversation, a piece of writing, a decision you are facing. If you cannot think of a use, the entry might not be worth keeping.

That is it. Five fields. Enough structure to make retrieval easy, not so much that you stop capturing.

An example entry

Source: Thinking, Fast and Slow by Daniel Kahneman

The idea: "Nothing in life is as important as you think it is, while you are thinking about it."

Why it matters: This is the focusing illusion. Whatever occupies your attention feels disproportionately important. Useful filter for any decision that feels urgent.

Tags: decision-making, cognitive bias

Next use: Review before quarterly planning. Am I overweighting whatever is top of mind?

Notice the "next use" field. It turns a passive archive into an active tool. Ryan Holiday, who runs one of the most prolific modern commonplace book practices, describes his system similarly: every entry on his index cards is tagged and filed by theme, specifically so he can pull relevant ideas when working on a book, article, or speech. The collection exists to be used, not admired.

Commonplace book ideas that stay practical

If you are looking for commonplace book ideas to get started, focus on routines rather than decoration:

Keep one inbox for raw captures. This is your holding pen. Everything goes here first - highlights from your Kindle, quotes from articles, ideas from conversations. Don't organize in the moment; just capture.

Process the inbox twice a week. Sit down for 15 minutes and go through your raw captures. For each one, fill in the five fields from the template above. Promote the good ideas to your main collection. Delete or archive the rest.

Limit your tags. Start with 5 to 8 broad themes. You can always add more later, but starting with too many categories causes decision paralysis and inconsistency. Philosopher Umberto Eco suggested that the value of any filing system is inversely proportional to the number of categories it contains. Fewer buckets, easier retrieval.

Review your top entries weekly. This is the habit that separates a useful commonplace book from a digital junk drawer. Once a week, spend 10 minutes scanning your best recent entries and connecting them to whatever you are working on. Ideas you revisit become ideas you remember.

Running this template digitally

You can keep a commonplace book on paper (many writers still do), but digital has a significant advantage: search. As your collection grows past a few hundred entries, being able to search by keyword or meaning becomes essential.

Any notes app works. Notion, Obsidian, Apple Notes, a plain text file. What matters is that you use it consistently, not which tool you pick.

If you want a purpose-built option, Screvi maps directly to this template:

  • Source maps to your imported books, articles, PDFs, and notes - Screvi pulls highlights from Kindle, Kobo, Apple Books, web articles, YouTube, and more.
  • The idea maps to the highlight text itself.
  • Why it matters maps to the note you attach to each highlight.
  • Tags maps to Screvi's color-coded tagging system, with AI suggestions to keep things consistent.
  • Next use maps to what surfaces during your weekly review session.

The advantage over a generic notes app is that Screvi adds semantic search (find ideas by meaning, not just exact keywords), spaced repetition review (so important entries come back to you automatically), and a highlights feed for casual browsing through your collection.

Search by meaning, not just keywords

This is where digital commonplace books gain a real edge over paper. As your collection grows, you will not always remember the exact words you used. You might search for "making better decisions" but the entry says "cognitive bias in judgment."

Keyword search misses that. Semantic search catches it because it understands conceptual similarity, not just string matching. This becomes increasingly valuable as your collection grows past a few hundred entries.

Add a review loop

The commonplace book tradition had a built-in review mechanism: you physically handled the book regularly, flipping through pages to find things. Digital collections lose that tactile re-exposure. You need to replace it deliberately.

Options that work:

  • Weekly review session. 10 to 15 minutes scanning recent entries and connecting ideas to current work.
  • Daily digest. A handful of entries emailed to you each morning - low effort, high consistency.
  • Spaced repetition. The most effective option for long-term retention. Entries resurface on a schedule optimized for memory, appearing more frequently when they are new and less frequently as you demonstrate recall.

In Screvi, all three are built in. The review system uses the SM-2 spaced repetition algorithm, the same method used by Anki and other proven flashcard tools. The daily email digest arrives whether or not you open the app. And the highlights feed lets you browse your collection the way you'd scroll a social media feed - except everything in it is something you chose to remember.

Commonplace book vs journal

People often confuse these. The distinction matters because mixing them creates a messy system that does neither job well.

A journal is internal. It tracks your experiences, emotions, reflections, and personal growth. What happened today. How you felt about it. What you want to change.

A commonplace book is external. It tracks reusable ideas from outside sources. What you read. What you learned. What you want to remember and apply.

Many readers benefit from both, running them in parallel. Use your journal in whatever format you like. Use your commonplace book (or Screvi) for the knowledge side. Link them during your weekly review if ideas from one inform the other.

The boring truth about systems that work

The best commonplace book template is the one you still use after six months. Not the one with the most fields, the prettiest formatting, or the most sophisticated tagging taxonomy.

Start with five fields. Process twice a week. Review once a week. Adjust only when something clearly is not working. That discipline - keeping things simple when every instinct says to add more complexity - is what separates a living system from an abandoned one.

Try Screvi as your digital commonplace book

Further reading: Ryan Holiday on the notecard system. Sönke Ahrens, How to Take Smart Notes. John Locke, A New Method of a Common-Place Book (1706).