The encyclical Pacem in Terris is one of the most significant works of the pontificate of Pope John XXIII and is considered one of the most important encyclicals of the Catholic Church on the theme of peace and human rights. Published in 1963, in a period marked by international tensions and global conflicts, it deals with peace among all nations, fundamental human rights such as the right to life and freedom, the dignity of the person, and urges all people of goodwill to collaborate and build a more just and peaceful world. The words of that document - so powerful and meaningful - still resonate today, promoting commitment to peace and social justice in a world marked, unfortunately, by conflicts and inequalities. Emilio Isgrò was inspired by the relevance of the thought of John XXIII when in 2019, on the occasion of the five hundredth anniversary of the death of Leonardo da Vinci, he was called to confront Leonardo da Vinci and the lost Battle of Anghiari. Isgrò chose to address the theme of peace and violence through an artistic approach that goes beyond mere illustration or formal homage to Leonardo da Vinci. He sought to create a dialogue between Leonardo's thought and contemporary challenges, finding continuity between the Renaissance and the issues of our time that are at the heart of the encyclical. Leonardo lived in a period permeated by contradictions where the teachings of Humanism, which emphasized reason and knowledge as tools to improve the human condition and achieve the fullness of the individual, were opposed to the most bestial madness of war, almost emphasizing the complexity of society and culture at the time. These are the same contradictions that characterize our time, because the fundamental challenges of being human are not so different over the centuries. Our society, despite progress and ideals of peace and democracy, still sees its animal instincts and behaviors significantly influencing humanity. It is precisely on the basis of this parallelism that Isgrò takes the first words of Pope John XXIII's Pacem in Terris document, places them on a white background, and then erases them. An apparently iconoclastic gesture that actually conceals the intention to protect the meaning of the words in a context, that of our modernity, dominated by an excess of communication, both verbal and visual. Erasing Pacem in Terris does not mean denying peace, but rather a way to make the words pregnant with a message of harmony and hope that bees must absorb and spread in the world.