There's a chapter in Mary Baker Eddy's book Science and Health with Key to the Scriptures entitled "Some Objections Answered," and it's good reading for every inquiring mind.
Two summers ago, shortly after beginning an in-depth study of Christian Science, I got rid of something that had been with me for sixteen hours or more every day for twenty-one years; something I had come to rely on completely, and without which I had felt lost and blind—my eyeglasses.