"For a while I worked as a volunteer in a hospital, and it was there, almost by chance, that I invented Geronimo Stilton … It was at the time when Patch Adams taught the world that children need to laugh to get better. So I started to make up funny stories in which the protagonist was a clumsy mouse called Geronimo Stilton. He would get involved in all sorts of entertaining adventures, full of funny events and twists in the plot, that children found really compelling."