Wonder is the salt of the earth.

Drawing is deception.

He who wonders discovers that this in itself is wonder.

I don't grow up. In me is the small child of my early days.

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

I try in my prints to testify that we live in a beautiful and orderly world, and not in a formless chaos, as it sometimes seems.