Why are we crying? MatÔeo asks his mother. To this complex question, but quite legitimate, MatÔeo's mother offers a rich and nuanced answer. She explains to him, in a clear and yet poetic way, the many reasons - and the emotions - which provoke this typically human reaction: sadness, anger, helplessness, the feeling of loneliness, without forgetting, of course, happiness. She reminds him that everyone cries and especially that everyone has the right to do it.