In 2000 my first book O lugar da cr tica. Ensaios oportunos de arquitetura, was published. It gathered some texts written as a journalist and architectural critic, during the last decades of the 20th century. And it ended a cycle and opened another: then, after twenty years of professional activities, I decided to fully embrace the academic world. In this century, being a professor and a researcher became my main activity. After another twenty years, this new book presents a part of my activities, collecting some unpublished and out-of-print texts.