And the prophecy came true.
Daniel Radcliffe, who gained fame for playing wizard boy Harry Potter, has left Hogwarts and is all set to bring his star magic to a Broadway revival of 'How to Succeed in Business Without Really Trying'.
In an exclusive interview with CBS News, the 21-year-old actor speaks about his commitment to make some magic of another kind.
He is starring as J. Pierrepont Finch in the 50th-anniversary revival of 'How to Succeed in Business Without Really Trying'.
"No, no. I mean, singing, I can do. But dance took a lot of work. I worked for about a year and a half with two dance teachers, one after the other, to get half-decent. And now, hopefully, you know, I'll be able to surprise a few people," Radcliffe said when asked whether he was a natural song and dance man.
The dancing shoes might be something new. But performing is an old hat.
Ten years ago, a blockbuster series of books inspired a big budget series of movies, and 11-year-old Radcliffe was picked to play Harry Potter.
With each new film - and every red carpet appearance - the world watched him grow up.
His school was Hogwarts, and his classmates and teachers were the cast and crew around him.
But unlike a number of child stars, Radcliffe said his extracurricular activities have not included late night parties and nightclubs.
He made his debut in 2008 in the macabre psychological thriller 'Equus' and stunned audiences with a nude scene.
The actor also told the host that he doesn't read reviews, even the good ones.
"If you're going to read the good ones, you have to read the bad ones. And I certainly don't want to read the bad ones! So I'm not going to read the good ones. The closest thing I've done to that is, I once went online and read, like, some things people were saying about me. And that was just the biggest mistake. I mean, like, that is just, anybody who ever feels like doing that is, it's just insane," he said.
He also spoke of the final 'Harry Potter' film.
"You know, I cried, I wept like a child on the day we finished filming. It has been like a family, and it's scary to have to go out into the real world. It feels like you're, you know, leaving the nest. But at the same time, you know, we always knew it was going to end. And we can't just go on indefinitely, filming Harry Potter films," said the actor.