You know you have to read "between the lines" to get the most out of anything. I want to persuade you to do something equally important in the course of your reading. I want to persuade you to "write between the lines." Unless you do, you are not likely to do the most efficient kind of reading.

 

I contend, quite bluntly, that marking up a book is not an act of mutilation but love.

 

There are two ways in which you can own a book. The first is the property right you establish by paying for it, just as you pay for clothes, and furniture. But this act of purchase is only the prelude to possession. Full ownership comes only when you have made it a part of yourself, and the best way to make yourself a part of it is by writing in it. An illustration may make the point clear. You buy a beefsteak and transfer it from the butcher's icebox to your own. But you do not own the beefsteak in the most important sense until you consume it and get it into your bloodstream. I am arguing that books, too, must be absorbed in your bloodstream to do you any good. 

 

There are three kinds of book owners. The first has all the standard sets and best-sellers—unread, untouched. The second has a great many books—a few of them read through, most Of them as clean and shiny as the day they were bought. (This person would probably like to make books his own, but is restrained by a false respect for their physical appearance.) The third has a few books or many every one of them dogeared and dilapidated, shaken and loosened by continual use, marked and scribbled in from front to back.

 

Is it false respect, you may ask, to preserve intact and unblemished a beautifully printed book, an elegantly bound edition? Of course not. I'd no more scribble all over a first edition of "Paradise Lost" than I'd give my baby a set of crayons and an original Rembrandt! I wouldn't mark up a painting or a statue. Its soul, so to speak, is inseparable from its body. And the beauty of a rare edition or of a richly manufactured volume is like that of a painting or a statue. 

 

　　 But the soul of a book can be separated from its body. A book is more like the score of a piece of music than it is like a painting. No great musician confuses a symphony with the printed sheet of music. If your respect for magnificent binding or typography gets in the way, buy yourself a cheap edition and pay your respects to the author. 

 

Why is marking up a book indispensable to reading? First, it keeps you awake. (And I don't mean merely conscious; I mean wide awake.) In the second place, reading, if it is active, is thinking, and thinking tends to express itself in words, spoken or written. That marked book is usually the thought-through book. Finally, writing helps you remember the thoughts you had, or the thoughts the author expressed. Let me develop these three points.

 

　　 If reading is to accomplish anything more than passing time, it must be active. You can't let your eyes glide across the lines of a book and come up with an understanding of what you have read. Now an ordinary piece of light fiction, like, say, Gone with the Wind, doesn't require the most active kind of reading. The books you read for pleasure can be read in a state of relaxation, and nothing is lost. But a great book, rich in ideas and beauty, a book that raises and tries to answer great fundamental questions, demands the most active reading of which you are capable. If when you've finished reading a book,the pages are filled with your notes,you know that you have read actively.

 

But,you may ask,why is writing necessary? Well,the physical act of writing,with your own hand,brings words and sentences more sharply before your mind and preserves them better in your memory.To set down your reaction to important words and sentences you have read, and the questions they have raised in your mind,is to preserve those reactions and sharpen those questions.

 

Even if you wrote on a scratch pad,and threw the paper away when you had finished writing,your grasp of the book would be surer.But you don't have to throw the paper away .The margins (top and bottom,as well as side), the end papers,the very space between the lines,are all available. They aren't sacred.And ,best of all,your marks and notes become an integral part of the book and stay there forever. You can pick up the book the following week or year,and there are all your points of agreement,disagreement, doubt,and inquiry. It's like resuming an interrupted conversation with the advantage of being able to pick up where you left off.

 

And that is exactly what reading a book should be: a conversation between you and the author. Presumably he knows more about the subject than you do;naturaly,you'll have the proper humility as you approach him. But don't let anybody tell you that a reader is supposed to be solely on the receiving end. Understanding is a two-way operation;learning doesn't consist in being an empty receptacle. The learner had to question himself and question the teacher.He even has to argue with the teacher,once he understands what the teacher is saying.And marking a book is literally an expression of your differences or agreements of opinion,with the author.

 

By Mortimer J.Adler