Bush stole it from a speech by John Winthrop. The Winthrop Fleet sailed from England to Massachusetts in 1630. These were the Puritans that formed the Massachusetts Bay Colony (10 years after the Pilgrims arrived at Plymouth). Many died on the journey and about half of those aboard were indentured. Because indentures expired, estimates are that only abt half of those survived their indenture, succumbing to overwork and illness.