Friedrich Durrenmatt

I don't really know what it is about vampires that makes them such a powerful symbol, metaphor, whatever in people's consciousness. But I do know they're tremendously powerful. I mean, there's a vampire on 'Sesame Street.' And Count Chocula. I don't know why it's so powerful.

And I think that still is true of this business - which is basically research and development - that you probably spend more time in planning and training and designing for things to go wrong, and how you cope with them, than you do for things to go right.