[There's another pause, and when he speaks again it is slower, more subdued.] Science is neither good or bad. It depends entirely on the person using it. There are good scientists and there are bad scientists. And neither ever quite seems to overcome the other.

... I've been accused of having a God complex before. [Quietly -] Good old Rita. She asked me why it was always my job to save everyone.

I don't suppose I ever did give her a satisfactory answer. [Even if he's not too aware of it, the sorrow is clear in his voice.]