Peter Sis grew up in Czechoslovakia when the country was still a satellite of the Soviet Union. He remembers not having enough paper for drawing and only one kind of ink. Once a teacher caught him sketching in his notebook at school. She made him write over every page. In Czechoslovakia, there was not enough of anything, and drawing in a notebook was considered to be very wasteful. There were other sad things about living behind the Iron Curtain. The government controlled what could be said in public and written in books, especially if what was written criticized the people in charge.