Ferruccio Ritossa wrote these lines only a few months before he died, as a preface to a book he wanted to write and that, unfortunately, we will never be able to read. It was to be the story of his life, an amazing story indeed. With this article, we want to take a picture of Ferruccio's life, a mosaic of events, facts, ideas, hopes, and memories linked in a way that they will not go away, even after "a stroll in our brain."