Charles de Foucauld was a French Catholic priest, monk, and explorer who lived in the Algerian Sahara. Born in Strasbourg in 1858, he initially served as a military officer before undergoing a spiritual transformation. He eventually sought a life of solitude, living as a hermit among the Tuareg people. Rather than traditional preaching, he sought to witness to his faith through his presence and lifestyle. He was killed by Bedouin bandits in 1916 at his hermitage in Tamanrasset. He was canonized as a saint in 2022.