Found in CS Weekly..
"As you think about a character, to some extent what you're talking about is just the psychological makeup of the character -- what is he like and how does he relate to other characters. But then when you start to talk about 'What is his behavior?' in my mind that's where you get into the aspect of characterization. That's when you're into the dramatization, what the character does and what he says. That's his behavior. So, you have the psychology, and if you have some grasp on some fundamental psychological truths about the character, you want to leave yourself enough room to allow the behavior to evolve naturally. "
– Ted Elliott, screenwriter for Pirates of the Caribbean: At World's End