The War is creating a hunger for reality, and above all for spiritual reality. "Break me, O God, destroy me if you will, but save me from self-complacency and little interests and little successes and the life that passes as the shadows of a dream." If purity is the condition of vision, it is also the secret of strength. "My strength is as the strength of ten Because my heart is pure." Sir Galahad had made the discovery which true men always make. Sin is a source of weakness. Purity is a fount of strength. Unclean men are never conquerors--they have lost the first and most important of battles, that with themselves. It was not for nothing that Lord Kitchener emphasized the supreme importance of self control in his famous letter to the troops at the beginning of the War. "Success in War," says the Field Service Regulations, "depends more on the moral than on the physical qualities." Foremost among moral forces is that wonderful thing, all powerful though difficult to define, which men call _discipline_. Of the many qualities which make up discipline, there is one of unrivalled importance, which it partly evokes and partly creates, and that is self-control. It is of the essence of discipline that a man should learn entirely to subordinate his own wish or pleasure or safety to a larger common purpose. Standing in the ranks he must control the desire to move his head or fidget with his hands. In the face of the enemy he must control his desire to run away. At all times and in all places he must control his desire to consult his own comfort or convenience. Such self-control involves a considerable measure of moral strength. Will a man be strong here, where strength is so needed, if all the while he is gravely weak in the region of his inner life? Is it likely that he will be able to inspire others with cheerful fortitude in face of hardships and death if the very source is fouled whence his own strength must be drawn? With all possible emphasis I would press this point upon you, that there is a vital connexion between purity and moral strength. And I urge it, not simply for your own sakes, but even more because of what you may be and do for others. "For their sakes I consecrate myself." The motive of that one perfect life is the only adequate motive for us who try to be His followers. How can I serve others, if my own soul is shackled in iron bonds? How can I fight for righteousness, in this War or in the Greater War, if in my own heart and life I have secret dealings with the enemy?