It was Victor Hugo who said that. And despite some recent academic controversies, it is undeniable that our body language reveals our emotions. No need to start long studies in psychology or neuroscience to understand what goes on between two people. You only have to pay attention to their expressions, their gestures, their postures. To consider the context of the interaction and, above all, to observe in a factual fashion. Without any preconception. Proof through image.