A quote notebook — the old name is a commonplace book, and people kept them for centuries — is a single place where you copy out the lines that got you. Not summaries, not opinions, not a list of what you finished. Just the sentences, and where they came from.
Highlighting marks a line inside a book you will probably never reopen. Copying it out moves it somewhere you will.
It is not a reading journal and it is not annotating
These three habits get confused, and they do different jobs. A reading journal tracks your reading life: what you read, when, what you thought. Annotating happens in the margins, in conversation with one book while you are inside it. A quote notebook is an archive that outlives individual books — one continuous document you keep for years, where a line from a novel sits next to a line from a biography.
They combine well. If you want the other two, we have written about keeping a reading journal and annotating and taking notes on books. The quote notebook is the one to start with if you only want one habit, because it takes the least effort and gives back the most.
How to start, properly small
Pick one place and never use a second. A cheap paper notebook, one long note on your phone, one document — the format matters far less than there being exactly one of it. Two half-kept systems is the same as none.
Then keep the entry to three parts: the line, the author and title, and the page or chapter. That is it. No commentary required. If you later want to add a sentence about why you kept it, do, but making commentary compulsory is the fastest way to abandon the habit entirely.
Do not copy as you read. Mark the line — sticky tab, screenshot, bookmark, a dot in the margin — and transfer them in one sitting when you finish the book. Stopping mid-chapter to transcribe breaks your reading and the notebook is not worth that.
What is worth keeping
Beginners copy too much, then feel the notebook is diluted and stop opening it. A useful filter: keep a line if it does one of four things. It says something you already believed but could not phrase. It is beautiful as a piece of language, regardless of meaning. It argues with you, and you want to keep arguing. Or it belongs to a character so completely that it brings the whole person back.
What is usually not worth keeping: plot information, anything you are copying because it seems impressive, and whole paragraphs. If you cannot cut it to a few lines, what moved you was probably the scene rather than the sentence — and a note saying so is better than three pages of transcription.
The part everyone skips: reading it back
A notebook you never reopen is a nice object and nothing more. Build in one small habit: read a few pages of your own notebook once a month, or whenever you are between books and do not know what to start.
This is where it quietly becomes useful. You see what you have been circling for years. You find the line you needed this week and had forgotten. And because the entries carry titles, your own notebook becomes a recommendation list nobody else could have written — far more reliable than any algorithm, and a genuine answer to the problem in how to find your next book.
It also makes the case for going back. A quote from a book you read at twenty reads differently at thirty, which is the whole argument in why rereading books is worth it.
Paper or phone?
Paper is slower, and the slowness is a feature: copying by hand forces you to read the sentence a second time, word by word, and you remember it better. The cost is that you cannot search it.
A phone or a document is searchable, always with you and easy to tag by theme. The cost is friction-free collecting, which tends to produce enormous unread archives. If you go digital, impose the filter above deliberately. Either choice is fine. The one that fails is the hybrid you keep forgetting which half you used.
A note on sharing them
Quotes are meant to travel. Lines from books in the public domain can be shared freely, which is one reason old favourites circulate so widely — see free public-domain classics. For books still in copyright, quoting a sentence or two with the author and title in a post or a message is normal practice; copying out long passages is not. Credit the author and title every time, including in your own notebook. A beautiful orphaned line is a small loss.
Where this fits with Arwy
Our Android app Arwy is built on the idea that a line is more alive when someone else has read it too, so while you are reading you can leave a note on the exact line that got you and see what other readers wrote on the same one. It is not a replacement for your notebook — your notebook is private, permanent and yours, and it should stay that way. But it is a good place to find out whether the sentence that stopped you stopped anyone else.
Collecting lines you love? Share one with someone reading the same book. Get Arwy on Google Play.