The study of Scripture I find to be quite like mastering an instrument. No one is so good that they cannot get any better; no one knows so much that they can know no more. A professional can spot an amateur or a lack of practice or experience a mile away. His technicality, his spiritual ear is razor-sharp. He is familiar with the common mistakes, the counter-arguments; and insofar as this, he can clearly distinguish the difference between honest critics of the Faith and mere fools who criticize that which they know nothing.