Dr. Isaac Rufus Clark (1925-1990), the son of Reverend James H. and Lillian Clark was born February 15, 1925 in New Castle, Pennsylvania. He received his Bachelor of Arts degree from Wilberforce University in 1951, and in 1952, he received his Bachelor of Divinity degree from Payne Theological Seminary. Dr. Clark went on to receive his Ph.D. in Theology from Boston University in 1958. Clark was a lifelong member of the African Methodist Episcopal Church. He made public his call to the ministry in 1946, and in 1952 he was ordained as an elder. In 1962, Dr. Clark joined the faculty at the Interdenominational Theological Center as Professor of Homiletics and Director of Field Education. In recognition of his contributions as a professor and scholar, in 1975 he was chosen to be the first Fuller E. Callaway Professor of Homiletics at the Interdenominational Theological Center which he held until his death at the age of 64.