[PetoU]

imho usually the best books, are those complex ones, which I read for 4 months. Because after every page, 15 new questions arise, where settling them takes time, and then internalization of that wisdom takes time as well. And I don't even mention, that best books get better after re-reading.

In this light, 300 books in 4 years, seems quite a lot...

[300]

This is very true for some types of books. For example, I am not able to read Dostoyevsky or Carlyle fast. For some sort of books, I even feel like I need a nap after 30 mins of reading, as I feel that my brain gets tired :)