Many aspects of The Varieties of Religious Experience found their theoretical background in other books of James psychology or philosophy. In this article I try to connect his theory of imagination in The Principle of Psychology with his supernaturalism regarding religious experience. Both suppose a theory of the “feeling of reality” that explains how, under the working of imagination, abstract ideas or remote ideals can be perceived as real and lively, becoming motives for action, although they may not have anything (...) to do with sense experience. Although imagination is not mentioned in James’s doctrine of the will to believe, it is central in both understanding this doctrine as well as the overall vision of James psychology and philosophy of religion. Similarly, imagination is essential to grasp a better understanding of how ideas and ideals unite with reality in Dewey’s thoughts concerning religion. I find it useful, in order to have a better understanding of James position, to compare it with what Dewey has to say about it in A Common Faith. Contrasting their theories will show that James’s understanding of imagination can only be understood if rooted in a kind of realism about the ‘unseen universe’. (shrink)