On rereading: the books that change because you did.
A book is one of the very few fixed objects in a life. The words do not move. The sentence you underlined at nineteen is, letter for letter, comma for comma, the sentence sitting there at thirty-four. And yet rereading is reliably the experience of finding the book has changed. It has not. You have. The book is just fixed enough to show you the difference.
The reader is the variable
That is the quiet case for rereading. It is the cheapest longitudinal study you will ever run, and you are the only subject. The instrument is calibrated and never drifts. Any change in the reading is, by elimination, a measurement of you.
I have reread The Brothers Karamazov three times across about fifteen years. The first time, it was a thriller with a murder in it. I was nineteen. I wanted plot. The second time it was a book about fathers. The third time, recently, it was almost entirely about Alyosha. A character I had found, at nineteen, faintly boring. The book did not promote him. I did. Somewhere in those fifteen years I had quietly become someone for whom quiet goodness reads as more interesting than charisma. The reread is the receipt.
The marginalia of a rereader is a conversation between two strangers who happen to share a handwriting.
A small ritual for catching the drift
Most of this change is invisible because nothing records it. The fix is small, and I have done it for years now.
Date your marginalia. Not the book. The note. When you underline something or scribble in a margin, put the month and year next to it. Two letters, four digits. That is the method. There is no step two.
The first time you reread, you find a margin already occupied. A previous self has been here. Sometimes you agree with them and there is a nice little hum of continuity. More often you do not, and the disagreement is the data. The passage that floored you in 2014 reads obvious now, or a bit cheap. The paragraph you skipped clean over is now the whole reason you picked the book up again.
| Reading | What I underlined | What that says about me |
|---|---|---|
| First (19) | Aphorisms. Quotable lines. | I wanted the book to arm me. |
| Second (27) | Arguments. Structure. | I wanted to know if it was right. |
| Third (34) | Hesitations. Where the author is not sure. | I had stopped trusting certainty. |
Why not just read new books
Because new books cannot do this. A new book measures the author against you, once, and then it is done. A reread measures you against yourself, repeatedly, with the author holding the ruler still. The novelty side of reading culture, the to-be-read pile, the yearly count, the reading challenge, is a real pleasure and I am not knocking it. It is just structurally incapable of telling you who you have become. Only the fixed object can do that.
There is a gentler reason too. The books worth rereading are a small set. Going back to them is a way of keeping company with the handful of authors who have earned a permanent room. The new pile is a crowd. The reread shelf is a few friends. And friends, more or less by definition, are the people you see twice.
One last admission
The first draft of this had a line about how the best books "grow with you." I cut it on the reread, appropriately enough. Books do not grow. That is exactly their gift. They hold still, deliberately, so that you, who cannot, finally have something to measure against. Marginalia is the record of the measuring. Date it, and the record starts working.