Believing in the importance of education, Pétion started the Lycée Pétion in Port-au-Prince. Petion's virtues and ideals of freedom and democracy for the world (and especially slaves) were strong, and he often showed support for the oppressed. He gave sanctuary to the independence leader Simón Bolívar in 1815 and provided him with material and infantry support. This vital aid played a defining role in Bolivar's success in liberating the countries of what would make up Gran Colombia. Petion was reported to be influenced by his (and his successor's) lover, Marie-Madeleine Lachenais, who acted as his political adviser.