For thirty years, Heinz Peter Knes has developed a large body of work, focusing on photographic-documentary practice that seeks to engage image with society. Reflecting on the multiple “correspondences”, influences and interactions at the heart of his artistic work, we travel with him through the five chapters of this book, crossing paths with Josef Winkler, Hervé Guibert, Pasolini, Moyra Davey, Julie Ault, Jean-Luc Moulène, Danh Vo, Artaud and many others. Creating a new language, a sort of echo, as sensitive experience, which in a way dematerialize our perceptions, but enable “to gather” them.