I came to the ... open gate of mathematics. From here, well-trodden paths lead in every direction, and since then I have often spent time there. Sometimes I think ... I have trodden all the paths ... and then I suddenly discover a new path and experience fresh delights.

I think I have never yet done any work with the aim of symbolizing a particular idea, but the fact that a symbol is sometimes discovered or remarked upon is valuable for me because it makes it easier to accept the inexplicable nature of my hobbies, which constantly preoccupy me.

For me it remains an open question whether [this work] pertains to the realm of mathematics or to that of art.

I am myself: a light. In me you find your fate. So be not blind to the truth shining from my glow.

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.

I never got a pass mark in math ... Just imagine - mathematicians now use my prints to illustrate their books.

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