Here are a few words of praise about this important work:
"Christianity and Liberalism is a masterpiece and without doubt the single most important book ever written by a Westminster professor." - Carl R. Trueman
"This is an admirable book . . . a cool and stringent defense of orthodox Protestantism."
- Walter Lippmann
World Magazine: One of the Centuries Top 100 Books (1999)
Christianity Today: Top 100 Books of the 20th Century (2000)
And if you're looking for a helpful introduction to Machen's life and work, I would highly recommend Stephen Nichol's excellent little book, J. Gresham Machen: A Guided Tour of His Life and Thought.