He founded the Religious Congregation of the Sisters of Mary on August 15, 1964, in Anam-dong and, on May 10, 1981, the Brothers of Christ. Together with the sisters and brothers, Schwartz established Boystowns and Girlstowns to care for and educate the orphans, street children, and children of very poor families up to their late teens. They also built hospitals and sanatoriums for very indigent patients, and hostels for homeless and handicapped elderly men, retarded children, and unwed mothers. In 1983 he was a recipient of the Ramon Magsaysay Award for International Understanding, an award given annually in honour of President Ramón F. Magsaysay. He met Jaime Cardinal Sin, then the Archbishop of Manila, who invited him to set up his Religious Community in the Archdiocese of Manila. In 1985 he founded the Sisters of Mary at Sta. Mesa, Manila, expanding his charity programs. Buildings were constructed, and children from the slum and very poor areas were recruited. In 1989, he was diagnosed to have a terminal illness, amyotrophic lateral sclerosis (ALS). In spite of his deteriorating health, he established Boystown and Girlstown in Mexico, which he called his "unfinished symphony". His illness made him immobile, and he continued his work in a wheelchair. He prayed, heard confessions, and preached. Schwartz died on March 16, 1992, at the Girlstown in Manila, and was buried at the Boystown in Silang, Cavite, now Girlstown. The Sisters of Mary and the Brothers of Christ, continue to serve tens of thousands of the poorest of the poor in Korea, Philippines, Mexico, Guatemala, Brazil, Honduras and Tanzania. The official opening of the Causes of Beatification and Canonization of Aloysius Schwartz took place at the Minor Basilica of the Immaculate Conception, Metropolitan Cathedral, Intramuros, Manila, Philippines on December 10, 2003. On May 29, 2004, at The Sisters of Mary Girlstown Complex, Bo. Biga, Silang Cavite, Philippines, Socrates B. Villegas, Auxiliary Bishop of Manila and Episcopal Delegate on behalf of Gaudencio Rosales, Archbishop of Manila, declared the archdiocesan process of the beatification and canonization of Aloysius Schwartz closed. On October 6, 2012, the "Positio Super Vita Virtutibus et Fama Sanctitatis" was submitted to Angelo Amato, the Prefect of the Congregation for the Causes of Saints.