She left the gates of Entally on a sunny day in 1948 and walked a few blocks, just a stone's throw from the convent's south wall, to a slum built around a fetid swamp called Motijheel. There she began teaching the street children their Bengali letters with a stick in the dirt, and soon opened a school for them, which we visited yesterday as well. Then one day in 1946--I will offer Mass at the Motherhouse on the 72nd anniversary of this day on Monday, which the sisters call "Inspiration Day"--God asked this simple schoolteacher to leave her idyllic school. He had asked Abraham to leave Ur of the Chaldees, and He had asked His Son to leave heaven, and now he asked this young sister to leave her home for streets teeming with hunger and violence. But Calcutta was only the first step. She would keep going into every country on that big classroom map to establish the most international religious congregation in history.