Are you really sure that a floor can't also be a ceiling?

Originality is merely an illusion.

Science and art sometimes can touch one another, like two pieces of the jigsaw puzzle which is our human life, and that contact may be made across the boderline between the two respective domains.

I am always wandering around in enigmas. There are young people who constantly come to tell me: you, too, are making Op Art. I haven't the slightest idea what that is, Op Art. I've been doing this work for thirty years now.

At moments of great enthusiasm it seems to me that no one in the world has ever made something this beautiful and important.

My work is a game, a very serious game.

I believe that producing pictures, as I do, is almost solely a question of wanting so very much to do it well.