Peter Claver is a case of extreme solidarity, both for what he did and for the perspective from which he did it. He spent thirty-eight years giving himself over body and soul to the African slaves who were arriving at the port of Cartagena in abject misery. Not only was his life one of total commitment to the Africans, but he lived it “from the other side of history,” that is, by belonging completely to the slaves. This booklet explains Claver’s ways of acting and evangelizing and describes the spirit that drove all his apostolic work.