What is Writing? How does the writer relate to urban space and architecture? Why can graffiti be defined as calligraphic signs with a gestural nature? Why is talking about public art inappropriate? What are the errors of the institutions? What changes have photography, video, YouTube and new media made in making graffiti? This book intends to give some points of reference and analysis tools to the reader with the aim of asking questions but also to try to make Writing understood, placing itself as a container of theoretical reflections and marginal notes around it. It is a text that should be seen as a collection of the research carried out on the world of graffiti by the author over the past five years, a path created through field studies, bibliographic analysis, interviews with the protagonists and curatorial projects.