Machen on why liberal concessions to naturalism were wrongheaded:
In trying to remove from Christianity everything that could possibly be objected to in the name of science, in trying to bribe off the enemy by those concessions which the enemy most desires, the apologist has really abandoned what he started out to defend.
J. Gresham Machen, Christianity and Liberalism, (Eerdmans, 1923), 7-8