Within mysticism, for example, we must distinguish at least three completely different varieties. Nature mysticism has a feeling of oneness with the life of the universe. We have seen the characteristics of Vedanta mysticism, where there is a loss of identity in a sense of oneness with the Absolute. A third variety is genuine Christian mysticism which is always an 'I and Thou' conversation where the Christian remains very much a person and has personal contact with a supremely personal God. Evidently, therefore, it is dangerous logic to begin a discussion of religions with a statement about the reality and universality of religious experience.
Religious experiences are of at least a dozen different and contradictory kinds.
We must also take issue with Dr Radhakrishnan's statement that religions are based on the religious experience of their founder. This is pre-eminently true in the case of Buddha. Muhammad, on the other hand, claimed to be in a long line of Jewish prophets, and he certainly intended his followers to continue in the biblical revelation. The New Testament writers make it clear that Jesus Christ did not come to found a new religion. He spoke of the same God, he upheld the same law, and his disciples had the same experience as Abraham, David, Isaiah and Jeremiah.