The Book of Brennan is a book that Brennan wrote for Mira before her first year in the Riders Quadrant. It is a manual, full of inside information, tips, tactics and advice. In chapter 6 of Fourth Wing, Mira bribes a scribe to secretly give Violet this book to help her survive her first year.
“Mira, you’re a Sorrengail, so you will survive. Perhaps not as spectacularly as I have, but we all can’t live up to my standards, can we? All kidding aside, this is everything I’ve learned. Keep it safe. Keep it hidden. You have to live, because Violet is watching. You can’t let her see you fall. –Brennan” (Yarros 75).
Fourth Wing: Chapter 9 Excerpt– “I will not die today.”–Violet Sorrengail’s Personal Addendum to the Book of Brennan (Yarros 105)
Fourth Wing: Chapter 10 Excerpt- “Don’t underestimate the challenge of the Gauntlet, Mira. It’s designed to test your balance, strength, and agility. The times don’t matter for shit, only that you make it to the top. Reach for the ropes when you have to. Coming in last is better than coming in dead.” –Page forty-six, The Book of Brennan (Yarros 115)
Fourth Wing: Chapter 15 Excerpt- “Just because you survive Threshing doesn’t mean you’ll survive the ride tothe flight field. Being chosen isn’t the only test, and if you can’t hold your seat, then you’ll fly straight into the ground.” –Page fifty, The Book of Brennan (Yarros 171)
Fourth Wing: Chapter 21 Excerpt- “Don’t freak out if you can’t immediately channel your dragon’s powers, Mira. Yeah, I know you have to be the best at everything, but this isn’t something you can control. They’ll channel when they feel you’re ready. And once they do, you’d better be ready to manifest a signet. Until then, you’re not ready. Don’t push it.” — Page sixty-one, The Book of Brennan (Yarros 249)