"It is ambivalence. Because I think that they’re heroic even when they’re crazed. I think that being crazed and obsessed is part of being heroic. You don’t get one without the other. Ambition is something else. It’s not ambition in the material sense. My characters are obsessed with discovery and that does excite me and I do identify with that. A good creative scientist is as good as a good creative artist."