What Is Love? is a 2021 picture book written by Mac Barnett and illustrated by Carson Ellis. It tells the story of a boy who wants to know the meaning of love, and so is advised by his grandmother to ask to people around him.
Mac Barnett is a New York Times bestselling author and a beloved figure on the school speaking circuit. Carson Ellis is a Caldecott Honor-winner and illustrator of some of the most interesting and beautiful children's books published today. They're an incredible creative duo and long-time friends, working together for the first time on this book.