Charles Hodge was the principal of Princeton Theological Seminary between 1851 and 1878. A Presbyterian theologian, he was a leading exponent of historical Calvinism in America during the 19th century. He was deeply rooted in the Scottish philosophy of Common Sense Realism. He argued strongly for the authority of the Bible as the Word of God. Many of his ideas were adopted in the 20th century by Fundamentalists and Evangelicals.