Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Donald Thomas Regan was the 66th United States Secretary of the Treasury, from 1981 to 1985, and Chief of Staff from 1985 to 1987 in the Ronald Reagan Administration, where he advocated "Reaganomics" and tax cuts to create jobs and stimulate production. Born in Cambridge, Massachusetts, the son of Kathleen and William Francis Regan, he was of Irish Catholic origins. Regan earned his bachelor's degree in English from Harvard University in 1940 and attended Harvard Law School before dropping out to join the United States Marine Corps at the outset of World War II.