Often, in front of a work of art, both classic and contemporary, the question people ask themselves is: "But what does this mean?" In short, must art have a meaning or must it only suggest, at least amplify? Or again, must it celebrate, innovate, experiment? There are formulas or rules to answer the question "What is art?". Georges Braque argued that there is only one thing that is valid in art: that which cannot be explained. And which therefore opens up to doubt, to questions destined to perhaps remain unanswered. Elusive, like art.