Know the Present to Teach the Past

Thomas Arnold, The Use of the Classics:

“All this supposes, indeed, that classical instruction should be sensibly conducted ; it requires that a classical teacher should be fully acquainted with modern history and modern literature, no less than with those of Greece and Rome. What is, or perhaps what used to be, called a mere scholar, cannot possibly communicate to his pupils the main advantages of a classical education. The knowledge of the past is valuable, because without it our knowledge of the present and of the future must be scanty; but if the knowledge of the past be confined wholly to itself; if, instead of being made to bear upon things around us, it be totally isolated from them, and so disguised by vagueness and misapprehension as to appear incapable of illustrating them, then indeed it becomes little better than laborious trifling, and they who declaim against it may be fully forgiven.”