Philosopher. When he was fifteen he entered a convent where, as Dominican practice prescribed, he changed his name to Giordano. The choice of the novitiate and then of the vows was dictated by the desire to be able to deepen, within an environment protected by the rest of society, philosophy in particular and culture in general. Immediately heterodox in the path of faith, he, over time, elaborated an increasingly radical criticism of the monastery and its inhabitants, as well as of the official Catholic doctrine. Denounced for the first time in 1576 for heresy, he was forced to flee, starting a long series of wanderings that would take him to half of Europe. During this long absence from the peninsula he wrote numerous works and further developed his point of view on faith and the world. Returning to Italy in 1591, perhaps with the hope of being able to reform the Church, he was soon arrested in Venice and then extradited to Rome at the behest of the Roman inquisition. "Obstinate and stubborn" despite years of violence, imprisonment and torture, he never denied his thought. On February 17, 1600 he, was led to Piazza Campo de 'Fiori, with his mouth clamped in a vise to prevent him from speaking. Stripped of all his clothes and tied to a stake, he was burned alive, as ordered by the cardinals of the Holy Office who had sentenced him to death a few days earlier. Last terrible act of a trial in which Bruno had never wanted to abjure his philosophical and religious positions, and for this he had been judged a heretic. Thus died a great forerunner of his times, capable of investigating the planetary atmosphere, harshly criticizing the first forms of colonialism, writing in vernacular and Latin, producing a vast and complex imagery.