A History of the Warfare of Science with Theology in Christendom, Volume
by Andrew Dickson White
Volume One of this Two-Volume work is now available on Archive.org:

Biographer Albert Bigelow Paine mentioned that this book was one of Mark
Twain's favorite books, near the end of his life. Barbara Schmidt, in her
TwainQuotes.com says, "Mark Twain referred to Dickson's book saying, 'When
you read it you see how those old theologians never reasoned at all'"
Twain's personal copy of White's two volumes are heavily marked with his