The Know-It-All: One Man's Humble Quest to Become the Smartest Person in the World

The Know-It-All: One Man's Humble Quest to Become the Smartest Person in the World

by A. J. Jacobs

History of Books
Amazon:★★★★4.3(705)
Goodreads:★★★★3.76(29,745)
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Added on February 8, 2026

Description

Part memoir and part education (or lack thereof), The Know-It-All chronicles NPR contributor A.J. Jacobs’s hilarious, enlightening, and seemingly impossible quest to read the Encyclopedia Britannica from A to Z.33,000 PAGES 44 MILLION WORDS 10 BILLION YEARS OF HISTORY 1 OBSESSED MAN To fill the ever-widening gaps in his Ivy League education, A.J. Jacobs sets for himself the daunting task of reading all thirty-two volumes of the Encyclopedia Britannica. His wife, Julie, tells him it’s a waste of time, his friends believe he is losing his mind, and his father, a brilliant attorney who had once attempted the same feat and quit somewhere around Borneo, is encouraging but unconvinced. With self-deprecating wit and a disarming frankness, The Know-It-All recounts the unexpected and comically disruptive effects Operation Encyclopedia has on every part of Jacobs’s life—from his newly minted marriage to his complicated relationship with his father and the rest of his charmingly eccentric New York family to his day job as an editor at Esquire. Jacobs’s project tests the outer limits of his stamina and forces him to explore the real meaning of intelligence as he endeavors to join Mensa, win a spot on Jeopardy!, and absorb 33,000 pages of learning. On his journey he stumbles upon some of the strangest, funniest, and most profound facts about every topic under the sun, all while battling fatigue, ridicule, and the paralyzing fear that attends his first real-life responsibility—the impending birth of his first child. The Know-It-All is an ingenious, mightily entertaining memoir of one man’s intellect, neuroses, and obsessions, and a struggle between the all-consuming quest for factual knowledge and the undeniable gift of hard-won wisdom.

Reader Reviews

★★★★Matthew

I bought this book about 15 years ago in an airport bookstore. My thought was that I need a little something to read for the flight. Well, the flight didn’t last 15 years, so you can tell I am pretty good at procrastinating before reading my book purchases. But, procrastinating in this case had at least one interesting side effect. I’ll get to that in a bit . . .As a trivia buff, I enjoyed this book and the adventures of the author trying to cram as much knowledge into his brain as possible by r

★★Amanda

This book chronicles snarky rich kid (he is actually 35) A.J. Jacob's quest to read The Encyclopedia Brittanica from A-Z, in an attempt to become "the smartest person in the world". Jacobs breaks the book into alphabetical chapters and free-associates on the entries that he finds interesting. This book was by no means dull, but it was interesting in the way that flipping through the encyclopedia or the dictionary yourself is interesting-- as you scan the pages you find weird little tidbits that

★★★Meredith Holley

This was a little more like actually reading the Encyclopedia Britannica than I was really prepared for. I think it took me longer to read this book than it took Jacobs to read the entire Encyclopedia Britannica, too. So, I’m not sure what that says about my reading stamina. It took Jacobs something like a year to read the encyclopedia? I think it took me two years to read this book. Although I don’t really get how it’s possible that it took him a year because I feel like way more than half of t