Teresa of Calcutta
1910 — 1997 · Feast day: September 5
Mother Teresa — the 'Saint of the Gutters' — heard a call within a call to serve the poorest of the poor in Kolkata's slums. She founded the Missionaries of Charity to bring the abandoned dying off the streets and care for them with dignity, while secretly enduring a decades-long 'dark night of the soul' without faltering in her work.