A ready answer from G. K. C.

“It is no disgrace to Christianity, it is no disgrace to any great religion, that its counsels of perfection have not made every single person perfect. If after centuries a disparity is still found between its ideal and its followers, it only means that the religion still maintains the ideal, and the followers still need it.”

G. K Chesterton, Illustrated London News, March. 2, 1929.