The Imaginarium of Professor Pratchett This portrait is inspired by the English cartoonist and illustrator William Heath Robinson, best known for drawings of ridiculously complicated machines. I’ve painted Terry in the garb of a Victorian gentleman, which he wore to the book launch for Dodger in 2012. It suits him, and reflects his fascination with that era. His top hat is tall enough – with a bit of magic – to contain all the ideas and characters that his endlessly resourceful mind created.