I agree so much with this article. The best thing for me is to consider a book more valuable marked up than in prestine condition. I highlight on the first read and then summarize the highlights in my own cliff notes and put them in a folder I call read books. Therefore, I can re-read a book in 3-5 minutes. If I feel I have grown and the book could have new things for me to learn I can later re-read the book.

I use to treat books like trophies. Now I rough them up and treat them more like a workbook.