Harvey Gallagher Cox Jr. (born May 19, 1929) is an American theologian who served as the Hollis Professor of Divinity at Harvard Divinity School, until his retirement in October 2009. Cox's research and teaching focus on theological developments in world Christianity, including liberation theology and the role of Christianity in Latin America. Cox was born on May 19, 1929, in Phoenixville, Pennsylvania, to Dorothea Cox and Harvey Gallagher. He was raised in Malvern, Pennsylvania. After a stint in the US Merchant Marine, Cox attended the University of Pennsylvania and graduated in 1951 with a Bachelor of Arts degree with honors in history. He went on to earn a Bachelor of Divinity degree from Yale Divinity School in 1955, and a Doctor of Philosophy degree in the history and philosophy of religion from Harvard University in 1963. Cox was ordained as an American Baptist minister in 1957, and started teaching as an assistant professor at the Andover Newton Theological School in Massachusetts. He then began teaching at Harvard Divinity School (HDS) in 1965 and in 1969 became a full professor. He was to become "the single most heeded professor in religion at Harvard." Cox became widely known with the publication of The Secular City in 1965. It became immensely popular and influential for a book on theology, selling over one million copies. Cox developed the thesis that the church is primarily a people of faith and action, rather than an institution. He argued that "God is just as present in the secular as the religious realms of life". Thus, the original title was God and the Secular City, which "he still believes... would have more accurately described the book's theme." Far from being a protective religious community, the church should be in the forefront of change in society, celebrating the new ways religiosity is finding expression in the world. Phrases such as "intrinsic conservatism prevents the denominational churches from leaving their palaces behind and stepping into God's permanent revolution in history" were viewed as threatening to the status quo by some, or seen as an embrace of the social revolution of the 1960s.