On May 2, 1810, the future Pope Leo XIII, 257th Roman Catholic pope (1878-1903), is born. For a survey of the legacy of Pope Leo XIII’s Rerum Novarum and the initiation of Catholic Social Teaching, as well as his confluence with the thought of Abraham Kuyper, read this article by Mark A. Noll, “A Century of Christian Social Teaching: The Legacy of Leo XIII and Abraham Kuyper.”