Perhaps the hall of fame will even one day include Maguire, who admits to being "absolutely stunned" by the success of "Wicked."
Just as the book hit it big, Maguire was immersing himself in parenthood, and he credits tasks like changing diapers and teaching his kids the alphabet with keeping him grounded.
"Young children train your mind away from personal success," he said. "I think that if that didn't happen, I would have become insufferably proud."
Today, Maguire's three children "are just grazing the teenage years," and he said it's even more important to spend time with them. As such, he travels less these days then he once did, spending most of his time at his home in Massachusetts. He's busy working on the fourth and final volume of "Wicked," tentatively called "Out of Oz."
Maguire will speak at 10 a.m. For information, visit www.empirestatebookfestival.org.