"I've always wanted to get better as an actor. And I have got better. You've only got to see my early work to see that.
"As for a fruity voice? Well, it may be a voice that is trained like an opera singer's voice: to fill a large space. It is unnatural. Actors have to be heard and their voice may therefore develop a sonorous quality that they can't quite get rid of, so you think actors are as pompous as their voice is large. I suppose Damian was thinking of that a little bit, too."
He continued: "To be allowed for the first time in your later career to play leading parts in extremely popular movies is not a situation to worry about. No-one needs to feel sorry for me or Michael Gambon (who played Professor Dumbledore in the Harry Potter movies) or anyone else who has fallen victim to success."
Sir Ian, who came out as gay at the age of 49, went on to admit that he had sympathy for gay, A-list stars who keep their sexuality a secret.
"It's true of A-lists all over the world - A-list priests, A-list politicians. What will other people think? Will people still vote for me? Will people come and see me act?
"They're warned by the people who surround them - agents and managers, who have a living to make and are worried that the actor will get pigeonholed."
"I don't think the audience gives a damn," he added. "You don't have to be straight to play Gandalf. Anyway, who says that Gandalf isn't gay? I loved it when JK Rowling said that Dumbledore was gay."
He also revealed during the interview that the Foreign Office had warned him not to travel to Russia, because of the country's stringent laws on homosexuality.
"That's why I can't go to Russia... They couldn't protect me from those laws. Two and a half hours from London! In the land of Tchaikovsky, Diaghilev, Rudolf Nureyev - gay artists whose sexuality informed their work," he said.
McKellen is currently starring in two plays on Broadway: Harold Pinter's No Man's Land and Samuel Beckett's Waiting For Godot.
- Independent