At the same time we shrink not from the distinct avowal of the Christian doctrine that it is reasonable and proper to offer prayer for recovery from sickness, and that such prayer, offered in submission to the Divine will, may be answered. We are not ashamed of the good old faith--"the Aberglaube," or superstition, as some are pleased to call it--that "_the prayer of faith shall save the sick_." The calmness and serenity of mind which the prayer of faith supplies is favorable to recovery. In fact, as "the systematic excitation of a definite expectation and hope," it has a legitimate place in psycho-therapeutics, as Feuchtersleben has shown, and even as Dr. Tuke concedes in his work on the "Influence of the Mind on the Body."[434] This "definite expectation and hope" is not a mere illusion. We have the assurance of Scripture that there is a Divine blessing which "giveth wisdom to the wise and knowledge to men of understanding," and which may descend upon the head and the heart of the most skillful physician in answer to prayer. Furthermore, it is generally admitted by medical men that "as in health certain mental states may induce disease, so in disease certain mental states may restore health."[435] Now these "mental states" may be the subject of Divine influence. Science has not dared to shut out the Spirit of God from the realm of mind, and therefore restoration to health may be given, in this manner at least, in answer to prayer. But no man would propose to make the prevalence of such prayer the subject of statistical averages. Prayer for the sick can not always result in their recovery, for then they would never die. Our lives are in the hands of God, and we shall live until our work is done, or until we have clearly shown that we will not do our work, and our life is a failure and a defeat. Finally, in the name of our holy religion, we repel with scorn the attempt of certain scientists to test the value of prayer, and with it also the value of a life of self-denial, purity, and piety, by merely temporal, secular, and visible results which may be weighed and measured and set down in statistical tables. Christianity teaches that the present life is a probationary scene. It is a state of trial and discipline with a view to the formation of moral character. Therefore our principles and our virtues must be put to the test. Temptation tries our fortitude; affliction ascertains our submission; suffering purifies our souls; doubt and mystery give energy to our faith. Amid the good and the evil of the present our character has to be developed and perfected. There is much to be encountered, much to be endured. But as Richard Winter Hamilton has said, "This discipline is salutary. The furnace heat purities the gold by its rigorous assay. The vine prunes until it bleeds that it may bear its richer clusters. A theatre is raised for lofty struggle and celestial dint." The end of all is to make us pure and noble and heroic souls.