Shall a man simply assume that the opinions which he happens to hold are correct, and that all who differ with him are in error? He has not framed his opinions quite independently for himself. We are all influenced by what we have inherited from the past, and what we inherit may be partly erroneous, even if we be right in the main. Moreover, we are all liable to prejudices, and he who has no means of distinguishing such from sober truths may admit into his creed many errors. The lesson of history is very instructive upon this point. The fact is that a man's religious notions reflect the position which he occupies in the development of civilization very much as do his ethical notions. Again. Even supposing that a man has enlightened notions and is living a religious life that the most instructed must approve; if he has never reflected, and has never tried to make clear to himself just what he really does believe and upon what grounds he believes it, how will it be with him when his position is attacked by another? Men are, as I have said, not at one in these matters, and there are few or none of the doctrines put forward as religions that have not been attacked again and again. Now, those who depend only upon an instinctive feeling may be placed in the very painful position of seeing no answer to the objections brought against them. What is said may seem plausible; it may even seem true, and is it right for a man to oppose what appears to be the truth? One may be shocked and pained, and may feel that he who makes the assault _cannot_ be right, and yet may be forced to admit that a relentless logic, or what presents itself as such, has every appearance of establishing the repellent truth that robs one of one's dearest possession. The situation is an unendurable one; it is that of the man who guards a treasure and recognizes that there is no lock on the door. Surely, if there is error mixed with truth in our religious beliefs, it is desirable that we should have some way of distinguishing between the truth and the error. And if our beliefs really have a foundation, it is desirable that we should know what that foundation is, and should not be at the mercy of every passer-by who takes the notion to throw a stone at us. But these desirable ends, it seems clear, cannot be attained without reflection. 77. THE PHILOSOPHY OF RELIGION.--The reflection that busies itself with these things results in what is called the philosophy of religion. To show that the name is an appropriate one and that we are concerned with a philosophical discipline, I shall take up for a moment the idea of God, which most men will admit has a very important place in our conception of religion.