Antoni van Leeuwenhoek and Johannes Vermeer were roughly the same age, they were extremely curious and they grew up in the bustling city of Delft in the seventeenth century. Nowadays, they are world famous. Both explored and created new worlds. Van Leeuwenhoek discovered the miraculous micro-life with his self-built microscopes, Vermeer toyed with light and painted masterpieces such as Girl with a Pearl Earring and View of Delft. What if… they knew each other? What if they were best friends who discussed private and work-related issues that affected them in crucial moments in their lives? Masters in art and science, but at the same time people of flesh and blood, forever bound by light. In What if…? Dialogues between Antoni van Leeuwenhoek and Johannes Vermeer by author Dirk van Delft and visual artist Elisa Pesapane, their conversations are recorded in both words and images.