Not everything that is learned is contained in books.

      I think this is a very good point, either from the books or from the experience got knowledge are very important, we can not just only got knowledge from book or form our live experience, because the book was to introduce the fixed knowledge, but in our live everything changes verity, if we just only receive knowledge in the books, it would not enough to suite with all of our daily live, like our job, social relationship, families, and so on. And if we just only receive knowledge from our experience, it might contain some unstable messages, because not every experiences we know that always right, so if we just use experience to deal everything, it might very dangerous, but it does not mean got knowledge from book was not important, because books knowledge is the root of all learning.