I just finished reading a book. I'm in book mode. To those close to me, I don't need to explain any further as to why I'm unusually quiet, or spacey, or just plain unresponsive.
After I read a book, I need time to let it settle. Just to think about it, and see if anything pops into my head. I don't like to actively think about themes or morals. I let the lessons and ideas seep into my head by osmosis.
For me, reading is an escape mechanism. I don't like to bring myself into the books. That would defy my purpose in reading. Because of that, I can't tell you what I learned from which book. But, I can tell you that my principles stem from my ideas, my ideas that pop into my head when I'm in book mode.
Book mode is a trance. I try not to talk. I just observe, and process. I try not to force my thoughts. I just think, and remember.
It lasts perhaps a day or two after I read an interesting, applicable, thought-provoking book. It's an enjoyable time.