Vittorio Cotesta’s The Heavens and the Earth traces the origin of the images of the world typical of the Graeco-Roman, Ancient Chinese and Medieval Islamic civilisations. Each of them had its own peculiar way of understanding the universe, life, death, society, power, humanity and its destiny. The comparative analysis carried out here suggests that they all shared a common human aspiration despite their differences: human being is unique; differences are details which enrich its image. Today, the traditions derived from these civilisations are often in competition and conflict. Reference to a common vision of humanity as a shared universal entity should lead, instead, to a quest for understanding and dialogue.