Robert Pattinson insecure?

Robert Pattinson is reportedly aim to avoid letting the fame go to his head and change him, HL reports.

Pattinson makes the revelation in a newly-released interview!

Rob, 26, talked to author Talia Soghomonian about staying grounded in the face of fame.

"I don't know, I mean I guess I'm quite a genuinely insecure person, and so it's not very hard for me. I mean, it's sort of like, I think even if someone says that something is good you've got to be pretty dumb to let your head get big, especially now when everything about your life is reported. I don't understand people who still have a big ego who are actors. It's like, everyone knows who you are, everyone knows you are just a vain moron, (laughter) and that's what every actor is. (laughter)"

The full interview will run in Talia's new eBook, titled Robert Pattinson, Kristen Stewart, Taylor Lautner -- In Their Own Words.