Are You Functionally Illiterate?: How Many Books Have You Read? (Heroic +1 #1,483)
17 Dec 2025 · 0 min
Brian Johnson explores Jim Mattis's claim that leaders who haven't read hundreds of books are functionally illiterate. Mattis points to Marcus Aurelius, Scipio, Grant, and Sherman as examples of readers who shaped history. Johnson argues that small daily reading habits compound into hundreds of pages a year.
Hey hero, if you're enjoying these daily plus ones, make sure you head to heroic us to check out all of the other goodness we have to help you activate your best every day. And now today's plus one.
Hi, this is Brian. Welcome back to another heroic plus one. In our last plus one we talked about Jim Mattis and his great book on leadership called Call Sign Chaos. As we briefly discussed, Mattis served in three wars over his 40 years of service and in the US Marines. Then he served as the Secretary of Defense and in the process he established himself as one of the most formidable strategic thinkers of the 21st century. In the book, he shares many of the things he did as he learned how to lead one of his core practices. He read a lot, Mattis tells us, and I quote, reading is an honor and a gift from a warrior or a historian who a decade or a thousand decades ago set aside time to write. He distilled a lifetime of campaigning in order to have a conversation with you. Mattis continues by saying, we have been fighting on this planet for 10,000 years. It would be idiotic and unethical to not take advantage of such accumulated experiences. If you haven't read hundreds of books, you are functionally illiterate and you will become incompetent because your personal experiences alone aren't broad enough to to sustain you. Any commander who claims he is too busy to read is going to fill body bags with his troops. As he learns the hard way, the consequences of incompetence in battle are final. History teaches that we face nothing new under the sun. The commandant of the Marine Corps maintains a list of required reading for every rank. All Marines read a common set. In addition, sergeants read some books and colonels read others. Even generals are assigned a new set of books that they must consume. At no rank is a Marine excused from studying. When I talked to any group of Marines, I knew from their ranks what books they had read during planning and before going into battle. I could cite specific examples of how others had solved similar challenges. This provided my lads with a mental model as we adapted to our specific mission. And he says reading sheds light on the dark path ahead. By traveling into the past, I enhance my grasp of the present. I'm partial to studying Roman leaders and historians, from Marcus Aurelius and Scipio Africanus to Tacitus, whose grace under pressure and reflections on life can guide leaders today, he says, I followed Caesar across Gaul. I marveled at how the plain prose of Grant and Sherman revealed the value of of steely determination. Eb Sledge in with the old breed, wrote for generations of grunts when he described the fierce fighting on Okinawa and the bonds that bind men together in battle. Biographies of Roman generals and Native American leaders, of wartime political leaders and sergeants, and in strategic thinkers from Sun Tzu to Colin Gray, have guided me through challenges. Eventually, I collected several thousand books from my personal library. I read broadly and selected a few battles in areas where I was weak to study deeply. Asked by a fellow Marine to provide examples, I sent him a list of my favorite books. End quote. That's from one of the early chapters on direct leadership. I read that with my jaw dropped while shaking my head in both awe and agreement, dropping large exclamation points in the sidebar while knowing I'd be pulling this out as a big idea and featuring it as a plus one. Here's the question for you, the commander of your life Are you functionally illiterate? As Mattis, who NPR describes as a warrior monk, tells us, if you haven't read hundreds of books, you are functionally illiterate. Know this. We've been waging external wars for 10,000 years, and we've been waging internal wars for at least as long. The wise sages across all cultures and time have blessed us with the gift of their hard earned wisdom. It is, as Mattis puts it, simply idiotic and unethical to not take advantage of such accumulated experiences. Period. You too busy to read? Don't have the time in your jumbo packed days? As I like to joke in our mastery at 101 coaching sessions? Let me follow you around for a day and see if we can find 10, 15, 20, 30, 60, 75 minutes of spare time you're wasting on trivial activities from Instagram and TikTok to Netflix and ESPN. And let me remind you that 15 minutes a day is 5,475 minutes a year. That's 91 hours. That's more than two full weeks of work. Throw 30 minutes a day at reading and you're at over 10,000 minutes and nearly 200 hours of reading. That's a month of full time work reading per year. If you read 40 pages an hour, that's 8,000 pages or 42200 page books a year. So what battle are you waging these days and what's the next book you're going to read to tap into the wisdom of those who went before us so you can win that battle and give us all you've got in this precious life of yours? Hero Day one All in. Let's get reading and let's go.
We hope you enjoyed today's heroic one. For more ancient wisdom, modern science and practical tools to help you flourish in energy, work and love, head to Heroic US where you can get started on your heroic journey for free.
More from Brian


What's THE Most Creative Act in the Universe?: Turning Around Glitches (Heroic +1 #2024)









