Think Again: The Power of Knowing What You Don't Know

"Renowned Wharton professor Grant spotlights one of the most important and impactful themes of our time: questioning one's own deeply held beliefs. Grant frames true knowledge as not knowing everything, but rather, listening as if we knew nothing at all in this intrepid book that is what our present moment requires."

—Newsweek, "Our 21 Favorite Books of 2021"

“In a world of aggressive certitude, Adam Grant’s latest book is a refreshing mandate for humble open-mindedness. Think Again offers a particularly powerful case for rethinking what we already know . . . that is not just a useful lesson; it could be a vital one.”

—Financial Times

“In his latest book, Think Again: The Power of Knowing What You Don’t Know, [Grant] is in vintage form.”

—The Wall Street Journal

“Think Again delivers smart advice on unlearning assumptions and opening ourselves up to curiosity and humility.”

—The Washington Post

“Adam Grant’s latest book pushes us to reconsider, rethink, reevaluate and reimagine our beliefs, thoughts, and identities and get to the core of why we believe what we do, why it is so important to us, and why we are steadfast to hold on to those ideas and beliefs. . . . It teaches us to stop digging our heels and doubling down and consider other people’s points of view so that we may grow our own. Once again, Adam Grant succeeded in turning our very way of thinking upside down as he pushes us to examine the obvious.”

—Forbes

"This book blends psychology and self-help to prove how doubt, failing, and rethinking are instrumental to improving ourselves and our world. . . . In three sections, he outlines why we struggle to embrace feedback, how we can help others rethink effectively, and how our communities can shift to encourage rethinking."

—Business Insider

“Grant is a born communicator—engaging and impossibly articulate. . . . Think Again . . . digs into the synaptic weirdness of why we think how we do and how we know what (we think) we know. The bottom line: In a world that’s constantly changing, we could all benefit from deliberately reassessing our cherished opinions.”

—Goodreads user

“Adam Grant believes that keeping an open mind is a teachable skill. And no one could teach this hugely valuable skill better than he does in this wonderful read. The striking insights of this brilliant book are guaranteed to make you rethink your opinions and your most important decisions.”

—Daniel Kahneman, Nobel Prize winner in economics and #1 New York Times bestselling author of Thinking, Fast and Slow

“THIS. This is the right book for right now. Yes, learning requires focus. But, unlearning and relearning requires much more - it requires choosing courage over comfort. In Think Again, Adam Grant weaves together research and storytelling to help us build the intellectual and emotional muscle we need to stay curious enough about the world to actually change it. I’ve never felt so hopeful about what I don’t know.”

—Brené Brown, Ph.D., #1 New York Times bestselling author of Dare to Lead

“Adam Grant makes a captivating argument that if we have the humility and curiosity to reconsider our beliefs, we can always reinvent ourselves. Think Again helped me learn about how great thinkers and achievers don’t let expertise or experience stand in the way of being perpetual students.”

—M. Night Shyamalan, director of The Sixth Sense and Split

“Readers will find common ground in many of his compelling arguments (ideologies, sports rivals), making this a thought-provoking read.”

—Booklist

“[A] fast-paced account by a leading authority on the psychology of thinking.”

—Library Journal, (starred review)

“For anyone who wants to create a culture of learning and exploration at home, work or school, Grant distills complex research into a compelling case for why each of us should continually question old assumptions and embrace new ideas and perspectives.”

—Entrepreneur

“It’s the idea of flexibility and how to achieve it that I found most compelling in Think Again. As I read the book, I couldn’t help but reflect on the times I’d clung to an opinion past its expiration date or imagine what I might have learned from a debate, had I asked a question instead of hurling a rebuttal.”

—Behavioral Scientist

About the Author

Adam Grant is an organizational psychologist at Wharton, where he has been the top-rated professor for seven straight years. He is one of TED's most popular speakers, his books have sold millions of copies, his talks have been viewed more than 25 million times, and his podcast WorkLife with Adam Grant has topped the charts. His pioneering research has inspired people to rethink fundamental assumptions about motivation, generosity, and creativity. He has been recognized as one of the world's ten most influential management thinkers and Fortune's 40 Under 40, and has received distinguished scientific achievement awards from the American Psychological Association and the National Science Foundation. Adam received his B.A. from Harvard and his Ph.D. from the University of Michigan, and he is a former Junior Olympic springboard diver. He lives in Philadelphia with his wife and their three children