image courtesy, Simon & Schuster


I’ve always been precious about the physical books, I have.
Partly because the books I read when I was a child, didn’t belong to me.
And so, I wrote notes. Gentle pencil marks as I read (to be erased, before I returned them), and then writing them all out into a notebook (and later typed in to a computer when I could afford one.)

I’ve longed to write in the damned books themselves, but old habits die hard. Until I read Adler, that is.

And then the clouds parted.

Marking a book, making it your own, highlighting it, questioning it, raging at it, whispering to it, completing the conversation, the author wishes to have with you … all of it, is such a sheer, physical, visceral experience.
I wonder why I didn’t do it sooner. Better late than never though. I’ve been marking every physical book and highlighting and annotating every electronic book, ever since I got back into reading, ten years ago.

Here’s Adler on why one needs to physically manhandle a book.1

Merely asking questions [of a book] is not enough. You have to try to answer them. And although that could be done, theoretically, in your mind only, it is much easier to do it with a pencil in your hand. The pencil then becomes the sign of your alertness while you read.

It is an old saying that you have to “read between the lines” to get the most out of anything. The rules of reading are a formal way of saying this. But we want to persuade you to “write between the lines,” too. Unless you do, you are not likely to do the most efficient kind of reading.

When you buy a book, you establish a property right in it2
But the act of purchase is actually only the prelude to possession in the case of a book. Full ownership of a book only comes when you have made it a part of yourself, and the best way to make yourself a part of it—which comes to the same thing—is by writing in it.

Why is marking a book indispensable to reading it?
First, it keeps you awake—not merely conscious, but wide awake.
Second, reading, if it is active, is thinking, and thinking tends to express itself in words, spoken or written. The person who says they knows what they think but cannot express it usually does not know what they think.

The Art of Reading, according to Adler, is that we take part in a great conversation.
I am talking to the author, but they have learnt from other masters elsewhere and are passing on their thoughts and knowledge, thus taking part in a single great conversation of humankind through the ages.

Reading a book should be a conversation between you and the author.
Presumably she knows more about the subject than you do; if not, you probably should not be bothering with her book.
But understanding is a two-way operation; the learner has to question themselves and question the teacher. They even has to be willing to argue with the teacher, once they understand what the teacher is saying.
Marking a book is literally an expression of your differences or your agreements with the author. It is the highest respect you can pay them

Mortimer Adler’s methods of marking up a book and making it your own

I’m not particularly religious about using them all, because I’ve already been using something similar (a subset) all my life

There are all kinds of devices for marking a book intelligently and fruitfully. Here are some devices that can be used:

  1. UNDERLINING—of major points; of important or forceful statements.

  2. VERTICAL LINES AT THE MARGIN—to emphasize a statement already underlined or to point to a passage too long to be underlined.

  3. STAR, ASTERISK, OR OTHER DOODAD AT THE MARGIN—to be used sparingly, to emphasize the ten or dozen most important statements or passages in the book. You may want to fold a corner of each page on which you make such marks or place a slip of paper between the pages. In either case, you will be able to take the book off the shelf at any time and, by opening it to the indicated page, refresh your recollection.

  4. NUMBERS IN THE MARGIN—to indicate a sequence of points made by the author in developing an argument.

  5. NUMBERS OF OTHER PAGES IN THE MARGIN—to indicate where else in the book the author makes the same points, or points relevant to or in contradiction of those here marked; to tie up the ideas in a book, which, though they may be separated by many pages, belong together. Many readers use the symbol “Cf ” to indicate the other page numbers; it means “compare” or “refer to.”

  6. CIRCLING OF KEY WORDS OR PHRASES—This serves much the same function as underlining.

  7. WRITING IN THE MARGIN, OR AT THE TOP OR BOTTOM OF THE PAGE—to record questions (and perhaps answers) which a passage raises in your mind; to reduce a complicated discussion to a simple statement; to record the sequence of major points right through the book. The endpapers at the back of the book can be used to make a personal index of the author’s points in the order of their appearance.

To inveterate book-markers, the front endpapers are often the most important. Some people reserve them for a fancy bookplate. But that expresses only their financial ownership of the book. The front endpapers are better reserved for a record of your thinking. After finishing the book and making your personal index on the back endpapers, turn to the front and try to outline the book, not page by page or point by point (you have already done that at the back), but as an integrated structure, with a basic outline and an order of parts. That outline will be the measure of your understanding of the work; unlike a bookplate, it will express your intellectual ownership of the book.


“That outline will express your intellectual ownership of the book”
Click to embiggen


But, wait! There’s more!

Marking up a book is all fine and dandy, but what about recording your thoughts? And questions?

Adler to the rescue again with The Three Kinds of Note-making.
Which kind you make depends upon the level at which you are reading.

1. Notes during Inspectional Reading
The questions answered by inspectional reading are: first, what kind of book is it? second, what is it about as a whole? and third, what is the structural order of the work whereby the author develops his conception or understanding of that general subject matter?
You should make notes concerning your answers to these questions, especially if you know that it may be days or months before you will be able to return to the book to give it an analytical reading. (These kind of notes have served me really well, since I tend to keep the book down and then come back to it after a while)
Notes at this stage, primarily concern the structure of the book, and not its substance—at least not in detail.
The best place to make such notes is on the contents page, or perhaps on the title page, which are otherwise unused in the scheme we have outlined above.

2. Notes during Analytical Reading
In the course of an inspectional reading, especially of a long and difficult book, you may attain some insights into the author’s ideas about his subject matter. Often, however, you will not; and certainly you should put off making any judgment of the accuracy or truth of the statements until you have read the book more carefully.
Then, during an analytical reading, you will need to give answers to questions about the truth and significance of the book. The notes you make at this level of reading are, therefore, not structural but conceptual. They concern the author’s concepts, and also your own, as they have been deepened or broadened by your reading of the book.

3. Notes during Syntopical Reading
There is a step beyond even that, however, and a truly expert reader can take it when he is reading several books syntopically. That is to make notes about the shape of the discussion—the discussion that is engaged in by all of the authors, even if unbeknownst to them. We prefer to call such notes dialectical.
Since they are made concerning several books, not just one, they often have to be made on a separate sheet (or sheets) of paper. Here, a structure of concepts is implied—an order of statements and questions about a single subject matter.


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  1. edited and paraphrased ↩︎

  2. emphasis, mine ↩︎