During this period, his friend Lorenzo Perrone's physical and psychological health declined. Lorenzo had been a civilian forced worker in Auschwitz, who for six months had given part of his ration and a piece of bread to Levi without asking for anything in return. The gesture saved Levi's life. In his memoir, Levi contrasted Lorenzo with everyone else in the camp, prisoners and guards alike, as someone who managed to preserve his humanity. After the war, Lorenzo could not cope with the memories of what he had seen, and descended into alcoholism. Levi made several trips to rescue his old friend from the streets, but in 1952 Lorenzo died. In gratitude for his kindness in Auschwitz, Levi named both of his children, Lisa Lorenza and Renzo, after him.