Zeitgeist was manufactured out of thin air, with absolutely no corroborating evidence. Yet people keep perpetuating the myth. Why? Because, it has nothing to do with facts, but is a reflection of the spiritual condition of the heart.
Lee Strobel about "the paganism in Christianity"
There is a principle which is a bar against all information, which is proof against all argument, and which cannot fail to keep man in everlasting ignorance. That principle is condemnation before investigation. ~ Edmund Spenser