The Observer | Review | Magnetic personalities:

"'We shower light rays on to a scene and analyse what happens as they interact with materials,' Wedge explains, grateful after his patient slog of the past 20 years that computer technology has finally made 3-D film-making so much easier. 'We had no idea what we were in for when we started Blue Sky,' says Wedge. 'We just had an idea of what we wanted to do. When we got to a point where it seemed impossible, we just kept doing it. After 18 years, we have a lot of it done.'"

Chris Wedge, animator of Robots (the new film from Ice Age creators)

What a lovely way to describe ray-tracing. And an inspiring comment.