I have always believed that art should be a deep pleasure...ther e is always, everywhere, an enormous amount of suffering. But I believe my duty as an artist is to overcome and alleviate the sterility of despair...New ways of seeing mean new ways of feeling... I do believe that painting can change the world.

On the iPhone I tended to draw with my thumb. Whereas the moment I got to the iPad, I found myself using every finger.

I can often tell when drawings are done from photographs, because you can tell what they miss out, what the camera misses out: usually weight and volume - there's a flatness to them.

About shadows: do we see shadows? Loads of people don't. A camera will notice a shadow, but how many people have got a shadow in front of them when they take a picture and don't notice it, and then they see it in the photograph because the photograph will catch the shadow.

The high-definition picture is still a perspective picture. That's the real problem, the perspective picture.

But slowly I began to use cameras and then think about what it was that was going on. It took me a long time, I mean I actually played with cameras and photography for about 20 years.

You always need a bit of low-tech.You always need a pair of scissors, it seems to me. You can do better things.... The high-tech, somehow, you do have to combine it with low-tech things.