The first question is always the tool.
I’ve tried most of them. Highlighters bleed through the page. They leave a wash of color on the verso, making the next page harder to read, and after a while, everything looks equally urgent, which means none of it is. Sticky notes fall out exactly when you need them. A pencil alone can feel tentative in a way that keeps me from committing to the page.
What I come back to is a pencil and a fine-tip ballpoint pen in various colors, used for different things.
A pencil is for questions, uncertainty, and passages I want to argue with or return to but haven’t decided about yet. Pen is for the things I know: the line that stopped me, the observation I want to keep, the word that earned its place, and the conclusions I’ve reached.
Pencil is the conversation in progress. Pen is the conclusion, or as close to one as I get.
Marginalia isn’t decoration. It’s a record of a mind in contact with a text, and the tools should match that.
Why annotate at all
Most people who resist annotating are protecting the book. They were taught that a clean page is a respected page. That writing in margins is damaging.
A clean page tells you nothing about who read it before you, what they noticed, or where the text pressed against their particular life.
But a clean page is also a silent one.
My annotated copies are messier and more valuable to me than the clean ones.
The clean ones I can replace. The annotated ones I can’t. Sometimes I have two copies of the same book: one to keep clean and the other to personalize with my marginalia.
For most serious readers, the question isn’t whether to annotate. It’s what to annotate, and how.
What to mark
There are a few things I’ve learned to mark, and a few I’ve learned to ignore.
I mark language first. A sentence that does something technically surprising: a rhythm that breaks the pattern, a word that shouldn’t work but does, an image that arrives from an unexpected angle.
Not because the sentence is beautiful in some general sense. Because it did something to me while I was reading, and I want to remember what that was.
I mark moments of recognition, when the book names something I’ve carried but never articulated. These annotations are often just a line in the margin, no words, only the mark itself.
The mark says: here. This. You already knew this, but didn’t know you knew it.
I mark disagreements. A place where the author’s logic fails, or where I think they’re wrong, or where what they claim is true in one context and false in another. Sometimes I shout back at the author in all capitals, in whatever bright color is nearest.
These are some of the most useful annotations because they force me to commit. Writing no, but— in a margin requires knowing what the “but” is.
If I like the author’s text design, I draw diagrams and short outlines in the margins. I may want to understand how the narrative was crafted.
What I’ve stopped marking is anything I underlined because I thought I should. Because the passage seemed important in the way important passages are supposed to seem important, not because it actually did something to me while I was reading.
That kind of marking is for appearances. It looks like engagement. It isn’t.
Annotating on a Kindle or in an epub
Digital annotation works differently, and I’d be dishonest if I said it feels the same. On a Kindle, I highlight and add notes through the touchscreen, which is faster than reaching for a pen but loses the physical interruption that makes handwriting useful. The highlights export cleanly to the Kindle app and to tools like Readwise, which is convenient. But convenience is part of the problem. Because it’s so easy, I tend to over-highlight, and over-highlighted passages suffer the same problem as a page full of yellow marker: everything urgent, nothing urgent. In an epub, the behavior depends on the app. I’ve had the best results treating digital highlights the way I treat pencil marks in a physical book: provisional, revisable, and worth revisiting before I trust them to mean what I thought they meant.
Why handwriting matters
The physical act matters more than most people acknowledge.
Writing by hand in a margin slows reading, not to a crawl, but to the pace of thought. I have to stop, hold the book, find the pen, and make the mark.
That interruption is the point.
It forces me to have an opinion before I move on. I can’t annotate passively. Picking up the pen is a small commitment to paying attention.
I read The Things They Carried the first time without a pen in my hand. I was reading quickly, absorbed, following the story. I noticed the pain and the boredom and the loneliness, the way Tim O’Brien made those feelings coexist on the same page without explaining how.
But I didn’t stop. I kept going.
The second reading, I annotated.
What I found was that the annotations from the second reading were arguments with the first. I had thought I understood the book. I hadn’t. I had received it.
Annotation forced me to go back and ask what I actually thought about what I’d received.
Reading can be reception. Annotating makes the response harder to avoid.
There is no right system.
The annotations that work are the ones I’ll actually use.
Fast enough not to break the reading, and specific enough to mean something when I come back.
A single word in the margin is often enough.
Why.
True.
Voice.
See p. 47.
The annotation doesn’t need to be a sentence. It needs to be a thread I can pick up again later.
My copy of The Things They Carried is covered in those threads. Some I followed. Some I left where they were.
All of them tell me who I was the second and third time I read that book, which is a kind of record I couldn’t have made any other way.
Final thought
Marginalia is evidence of attention. That’s different from proof of reading.
Years later, the notes are a conversation between who I was when I first read the book and who I am now. The margin holds both readers at once.
That may be the most valuable part of writing in books.
Where to go next
If annotation changes how you read, the companion essay Marginalia in Practice: Rereading as discovery explores what happens when you return to a marked text.
If you’re interested in the larger philosophy behind this habit, On rereading, marginalia, and a lifelong reading practice continue the argument.
And for more essays on attention, memory, rereading, and reading habits, visit The Reading Life.
Frequently asked questions
Should I annotate books with a pen or a pencil?
Use whatever makes you willing to engage. I use a pencil most of the time and different-colored pens for notes I need to look up quickly. I find that highlighters bleed through the page, and I avoid them.
What if I don’t want to mark my books?
That’s fine. Use sticky notes, a notebook, or a reading journal. Clean pages preserve the object. They don’t preserve much about what it was like to read it.
How do I annotate fiction?
Mark language, patterns, moments of recognition, contradictions, and places where your response changes.
What if I write something silly in the margin?
You probably will. That’s part of the record. Later notes often reveal more than polished ones ever could.
English (US) · 