Having too many books to read is a common complaint amongst avid readers, and for a long time I found it hard to understand why some people would read a book twice. I even heard of famous politicians reading their favorite books once a year. It sounded strange to me because I felt like they can take better notes and spend their time reading more books.
But now I understand that reading isn't just about acquiring information. It is also about awareness and commitment to the principles we wish to live by. Those who re-read books often read books that convey a philosophy of life, and they want to better connect to (and be reminded of) that philosophy.
I recently had that experience reading (or, rather, listening to) The Practicing Stoic. As I was listening to it I knew I wanted to buy the hardcover book and spend more time with the book. In fact, I didn't think about a re-reading but using it as a reference to integrate Stoic thoughts and practices into my life.
Reading isn't simply about information. Knowledge isn't about filling our brains with facts.
We want to cultivate a mental attitude, bring useful ideas to our attention, and change how we think, feel, and behave.
Whatever works for you and helps you achieve a better life, whether it's re-reading a single poem every day or going through different books, we shouldn't go after knowledge alone, but a transformation in our awareness and actions.