When someone forgets himself, this by no means makes him altruistic; when a thinking person forgets himself, he immediately also forgets his fellowma… - M. C. Escher

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

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.

My work has nothing to do with people, nothing to do with psychology. I am much more cerebral than Willink. I do not wish to be deep at all. I know that I don't hide anything at all in this work. When Carel Willink paints a naked lady in a street, I think: what is that lady doing there?. ..the house facades give me a lugubrious impression. So it is a lugubrious street. My work is not lugubrious. If you ask Willink: 'Why are those naked mistresses there', you do not receive an answer. With me you always get an answer when you ask: why..