“I suppose,” Helen answered, “that you would misunderstand me as long as I chose to let you. Do you not suppose that I too have a conscience,--do you suppose that I want any happiness it is wrong for us to take, or that I would not dare to go anywhere that your duty took you? And do you suppose that anything could be so painful to me as to know that you do not trust me, that you are afraid to live your life, and do what is your duty, before me?” David bent down suddenly and pressed a kiss upon the girl's forehead. “Precious little heart,” he whispered, “those words are very beautiful.” “I did not say them because they were beautiful,” answered Helen gravely; “I said them because I meant them, and because I wanted you to take them in earnest. I want to know what it is that you and I ought to be doing, instead of enjoying our lives; and after you have told me what it is I can tell you one thing--that I shall not be happy again in my life until it is done.” David watched her thoughtfully a while before he answered, because he saw that she was very much in earnest. Then he said sadly, “Dearest Helen, perhaps the reason that I have never been able all through my life to satisfy my soul is the pitiful fact that I have not the strength to dare any of the work of other men; I have had always to chafe under the fact that I must choose between nourishing my poor body, or ceasing to live. I have learned that all my power--and more too, as it sometimes seemed,--was needed to bear bravely the dreadful trials that God has sent to me.” Helen paled slightly; she felt his hand trembling upon hers, and she remembered his illness at her aunt's, about which she had never had the courage to speak to him. “And so, dear heart,” he went on slowly, “let us only be sure that we are keeping our lives pure and strong, that we are living in the presence of high thoughts and keeping the mastery of ourselves, and saying and really meaning that we live for something unselfish; so that if duty and danger come, we shall not prove cowards, and if suffering comes we should not give way and lose our faith. Does that please you, dear Helen?” The girl pressed his hand silently in hers. After a while he went on still more solemnly: “Some time,” he said, “I meant to talk to you about just that, dearest, to tell you how stern and how watchful we ought to be. It is very sad to me to see what happens when the great and fearful realities of life disclose themselves to good and kind people who have been living without any thought of such things. I feel that it is very wrong to live so, that if we wished to be right we would hold the high truths before us, no matter how much labor it cost.”