If we listen human instinct actually tells us what we need, but advertising makes us want things we don't need and things we can't have.

Practical! On Wednesday afternoons I could be practically anything. What's up?

As I was working I noticed that the way I designed the differential gearing actually created a spare drive that sat directly below the emperor's feet, or where they would be if he were to sit in the chariot.

I think most artists find it difficult to part with their work but it's the parting that keeps us alive and keeps us working. In the case of the chariot, although it's been sold I actually still have it, just in another form.

The hoop is there to remind us not to jump through it, not to submit to someone else's control.

You see, my ambition was not to confound the engineering world but simply to create a beautiful piece of art.

If you look closely you can see that they are all interconnected, symbolic of a never-ending circle in which it is simply impossible for the dog to catch the rabbit.