When you think about such fine actors as Maggie Smith or Michael Gambon, they do all mediums. I think it would be quite sad and a bit dull just to have to stick to one. I like all of them.

And, as I have said, it's made me think twice about the imagination. If the spirits aren't external, how astonishing the mediums become! Victor Hugo said of his voices that they were like his own mental powers multiplied by five.

Painting is the most magical of mediums. The transcendence is truly amazing to me every time I go to a museum and I see how somebody figured another way to rub colored dirt on a flat surface and make space where there is no space or make you think of a life experience.

I like to work in watercolor, with as little under-drawing as I can get away with. I like the unpredictability of a medium which is affected as much by humidity, gravity, the way that heavier particles in the wash settle into the undulations of the paper surface, as by whatever I wish to do with it. In other mediums you have more control, you are responsible for every mark on the page - but with watercolor you are in a dialogue with the paint, it responds to you and you respond to it in turn. Printmaking is also like this, it has an unpredictable element. This encourages an intuitive response, a spontaneity which allows magic to happen on the page. When I begin an illustration, I usually work up from small sketches - which indicate in a simple way something of the atmosphere or dynamics of an illustration; then I do drawings on a larger scale supported by studies from models - usually friends - if figures play a large part in the picture. When I've reached a stage where the drawing looks good enough I'll transfer it to watercolor paper, but I like to leave as much unresolved as possible before starting to put on washes. This allows for an interaction with the medium itself, a dialogue between me and the paint. Otherwise it is too much like painting by number, or a one-sided conversation.

And as I have said it's made me think twice about the imagination. If the spirits aren't external how astonishing the mediums become! Victor Hugo said of his voices that they were like his own mental powers multiplied by five.

Painting is the most magical of mediums. The transcendence is truly amazing to me every time I go to a museum and I see how somebody figured another way to rub colored dirt on a flat surface and make space where there is no space or make you think of a life experience.