My thoughts are maybe Dean loved to read when he was younger and when his mom died, he had to quit to take care of Sammy. It’s obviously a family thing, because all of the Winchesters, from what I can tell, are readers. And I think Dean’s favorite books are Lord of the Rings since he quotes it so often.
10 Best 'Supernatural' Quotes from 'Various & Sundry Villans' (13x12
Quote from Supernatural 13x12 │ Sam Winchester: Okay, I think Jamie must be a-a witch or a demon... Dean Winchester: Whoa, whoa, whoa, whoa. Whoa. Be nice. 'Cause she's got a sister. And if you play your cards right, you know, you guys might fall for each other. You know, the less attractive siblings, they fall in love. That's kind of cute, right? │ #Supernatural #Quotes