Dorothy Day was born in Brooklyn in 1897 and came of age in a household with little religious formation. Her early years were shaped by journalism, radical politics, and a peripatetic bohemian life in New York City—years marked by genuine intellectual searching alongside personal suffering, including an abortion she later mourned deeply. Her conversion to Catholicism in 1927, following the birth of her daughter Tamar, was not a retreat from the world but a reorientation toward it, a decision that cost her a common-law relationship she valued and committed her to a faith she would hold, without sentimentality, for the rest of her life.
The historical moment into which Day carried her new faith was the grinding poverty of the Great Depression. In 1933, together with the French peasant-philosopher Peter Maurin, she founded the Catholic Worker Movement and its newspaper, *The Catholic Worker*, which sold—and still sells—for a penny a copy. The movement established houses of hospitality in American cities where the homeless and hungry could find food, shelter, and human dignity. Day insisted that this work was not charity administered from a distance but a direct, personal encounter with Christ in the poor, drawing on the demanding tradition of the Church's social teaching and the witness of the saints.
Her theology was embodied rather than systematic. She drew on Scripture, the liturgy, and figures such as Thérèse of Lisieux and Peter Claver to ground a life of voluntary poverty and nonviolent resistance to war. She was arrested multiple times for acts of conscience, opposed American militarism through two world wars and into the nuclear age, and never sought approval from ecclesiastical or civic authorities when she believed the Gospel required otherwise.
Day died in New York in 1980, and her cause for canonization is open in the Catholic Church. She remains among the most searching American Christian voices on the relationship between faith and the conditions of ordinary life.