Abstract questions like this concerning the value of evidences find their solution independently of the human will. The human mind cannot be chained. New knowledge will suggest new doubts; and if so, spirit must be combated by spirit. Defences of Christianity, attempts to readjust it to new discoveries, must therefore continue to the end of time. In reference to the minor question of the value of the historic evidences, it is important to remember that these grand works are not simply refutative; they are indirectly instructive and didactic. Just as miracles are a part of Christianity, as well as evidences for its truth, so apologetic is a lesson in Christianity, as well as a reply to doubt.(653) It happens also that the most modern doubt of Germany has assumed the historic line, has become critical instead of philosophical; and, though the criticism is primarily of a different kind, it ultimately becomes capable of refutation by the very line of argument used in the eighteenth century.(654) We cherish therefore with devout reverence the memory of those writers who employed the power of the pen to defend the religion that they loved. They joined their intellectual labours to the spiritual earnestness which was the other weapon for opposing unbelief. Providence blessed their work. They sowed the seed of the intellectual and spiritual harvest which this century is reaping. “And herein is that saying true, One soweth and another reapeth. I sent you to reap that whereon ye bestowed no labour: other men laboured, and ye are entered into their labours. And he that reapeth receiveth wages, and gathereth fruit unto life eternal; that both he that soweth and he that reapeth may rejoice together.”(655) LECTURE VI. FREE THOUGHT IN THE THEOLOGY OF GERMANY FROM 1750-1835. PHIL. iv. 8. _Whatsoever things are true, whatsoever things are honest, whatsoever things are just, whatsoever things are pure, whatsoever things are lovely, whatsoever things are of good report; if there be any virtue, and if there be any praise, think on these things._