“Properly understood, Christianity is by no means the opiate of the people. It’s more like the smelling salts.” - Tim Keller, The Prodigal God.
Speaking as someone who doesn’t really read/find worthwhile a lot of books you would find in Christian bookstores, I do have to highly recommend this one. I find it pretty easy to read and engaging; Keller writes with a humble honesty that I think does much to disarm potential opponents within and without the modern church. The book is available on google books, and I recommend reading at least the first chapter as an excellent “worldview” tool, as some of my GCC professors might’ve said.
