My daughter is very strong-willed and is a great kid. She doesn't drink. She doesn't smoke. She doesn't fold to peer pressure. I think how affectionate my wife and I have been with her over the years all plays into that. She realizes the more people she is exposed to that kids who have both parents
If you were a medieval scholar reading a book, you knew that there was a reasonable likelihood you'd never see that particular text again, and so a high premium was placed on remembering what you read. You couldn't just pull a book off the shelf to consult it for a quote or an idea.

