I can best undertake my brief initial study of the way in which the experience of the individual human being is a source of religious insight by meeting an objection that a reading of my printed programme may have aroused in the minds of some of you. My list of the sources of religious insight, as contained in the titles of these lectures, makes no express reference to a source which some of you will be disposed to regard as the principal source, namely, Revelation. Here, some of you will already have said, is a very grave omission. Man's principal insight into the need and the way of salvation comes, and must come, you will say, from without, from the revelation that the divine power which saves, makes of itself, through Scripture or through the Church. Now, so far as this thesis forms part of the doctrine of a particular religion, namely, in your own case, of Christianity, I shall in these lectures omit any direct discussion of that thesis. The reason for the omission I have already pointed out. These lectures undertake a limited task, and must be judged by their chosen limitations. But in so far as revelation is a general term, meaning whatever intercourse there may be between the divine and the human, all these lectures, in dealing with sources of religious insight, will be dealing with processes of revelation. And in what sense this {20} assertion is true we shall see as we go on with our undertaking. This first mention of revelation enables me, however, both to state and to answer the objection to my programme which I have just mentioned, and in doing so to vindicate for the experience of any religiously disposed individual its true significance as a source of insight. Hereby, as I hope, I can forthwith show that even the present deliberately limited undertaking of these lectures has an importance which you ought to recognise, whatever your own views about revelation may be. Let me suppose, then, that an objector, speaking on behalf of revelation as the main source of religious insight, states his case briefly thus: "Man learns of his need for salvation chiefly through learning what God's will is, and through a consequent discovery that his own natural will is not in conformity with God's will. He learns about the way of salvation by finding out by what process God is willing to save him. Both sorts of knowledge must be principally mediated through God's revelation of himself, of his will, and of his plan of salvation. For, left to himself, man cannot find out these things. Apart from revelation, they are divine secrets. Hence the principal source of religious insight must be revelation."