Saint Teresa of Calcutta, known to the world as Mother Teresa, was a Roman Catholic nun, missionary, and modern-day saint who dedicated her life to loving and serving the poorest of the poor. Born Agnes Gonxha Bojaxhiu in 1910 in Skopje (now part of North Macedonia), she felt a deep calling to religious life at a young age. She joined the Sisters of Loreto and moved to India, where she taught in a girls’ school for nearly 20 years.
In 1946, during a train ride in India, Mother Teresa experienced what she described as a “call within a call” — a deep conviction that God was asking her to leave the convent and live among the poor. With courage and faith, she stepped away from the security of convent life and began ministering to the sick, hungry, and dying in the slums of Calcutta. In 1950, she founded the Missionaries of Charity, a religious community devoted to serving "the poorest of the poor." The order quickly grew and now serves communities in more than 100 countries.