The truth is that in the metaphysical and religious sphere, articulate reasons are cogent for us only when our inarticulate feelings of reality have already been impressed in favor of the same conclusion. Then, indeed, our intuitions and our reason work together, and great world-ruling systems, like that of the Buddhist or of the Catholic philosophy, may grow up. Our impulsive belief is here always what sets up the original body of truth, and our articulately verbalized philosophy is but its showy translation into formulas. The unreasoned and immediate assurance is the deep thing in us, the reasoned argument is but a surface exhibition. Instinct leads, intelligence does but follow. If a person feels the presence of a living God after the fashion shown by my quotations, your critical arguments, be they never so superior, will vainly set themselves to change his faith.

William James - The Varieties of Religious ExperiencesÂ