There is one other point which I wish to raise. What is the use of criticism? What is the use of all this investigating? Why indulge in all this doubt? And now let me give you an illustration which will lead me to answering this question and enforcing the point I have in mind. A farmer, if he selects a favorable piece of ground, plants good seed, cultivates it properly, if the rain falls and the sun shines, and the weather is propitious, will have a successful crop. Does it make any difference now whether the farmer has correct ideas about soil and seed and cultivation? Does it make any difference whether he has any true conception of the nature and work of the sunshine in producing this crop? In one sense, No. In another, a very important sense, Yes. Suppose the farmer, having gotten into his mind the idea that the sun is the source of all the life and growth of the things that he plants and the crops he cultivates, should say, "Well, now, it does not make any difference whether I have correct scientific theories about the sun or not: the sun carries on his work just the same." I have heard people say, over and over again, using an illustration like this: "What difference does it make what your theories are about the spiritual life, about the origin and nature of religion, about morality? If you live a good life, the results are just the same, whatever your thinking may be." And I grant it. But now suppose the farmer should say to himself: "The sun is the source of all the life that I am able to produce, that I see growing around me; and now I will worship him as a god. I will pray to him, I will sing songs of praise to him, I will bring birds and animals and burn sacrifices to him; and so I will win his favor, and get him to produce these wonderful results for me." Suppose he should so seek his results, and pay no attention to the character of the soil, to the kind of seed he planted, or to proper cultivation: would that make no difference? Do you not see that theory may be of immense practical importance in certain contingencies? Whether he has any knowledge of the sun or not, if he complies with the laws, the conditions, if he is fortunately obedient, then his results will be produced. But, if his ignorance, his superstition, lead him to neglect the natural forces with which he deals, then it may make all the difference in the world. So, as I study the history and development of religious thought, I see everywhere that men and women, through their ignorance in regard to the real nature of the universe and of God and of their own souls, are going astray, wasting time, wasting thought, wasting effort, misdirecting all these instead of complying with the real natural universal conditions on which these noblest and highest results which they desire depend.