With this book, we would like to resume the passionate conversation that Jean-Luc Nancy was engaged in throughout his life, with philosophers and artists from all over the world. Now that he has passed away, it is not enough for us to simply reflect on his work : we would like to stay true to the stance to which his thought invites us, in a pluralistic and communal way. Jean-Luc Nancy takes up the old philosophical question of truth as a praxis of a with - understanding truth without any given measure or comparison as an articulation of a with. It is a thinking responsible for the world from within the world, a language that seeks to respond to the ongoing mutation of our civilization.