On October 29, 1929, the Roaring Twenties came to a screeching halt. The stock market crashed, sending these United States of America into the Great Depression, which in turn affected much of the industrialized world. On September 25, 1929, in God's sovereign timing, just one month before the Wall Street Crash, fifty-two students began their fall semester at Westminster Theological Seminary in Philadelphia. Only a few months prior, J. Gresham Machen (1881–1937) resigned from Princeton Theological Seminary and founded Westminster Theological Seminary. Machen, along with Robert Dick Wilson, Oswald T. Allis, and Cornelius Van Til (and later John Murray), resigned their faculty positions at Princeton not only on account of its outright denial of certain essential doctrines of the faith but on account of its increasing lack of regard for doctrine itself. What was once a bastion of doctrinal orthodoxy, Princeton, America's second-oldest seminary, gradually became not only a stronghold of false doctrine but a cesspool of apathy toward doctrine itself.