A spiritual classic but also the story of a radical Catholic social activist who in her Catholic Worker movement blended immediate assistance with a vision to work toward social revolution. As a spiritual pioneer, her ecumenism and understanding of the implications of liturgical renewal made possible a movement that has outlasted her and fashioned her into a model for Catholics and radicals. Day’s activism, wonderfully detailed in her autobiography, proved a potent source of inspiration for many leading figures in the movement toward peace, racial justice, and poverty.