;’fl@szufl! i B . PREFACE X of wisdom divine in origin—there is both a perpetuation in time and a continual renewal by contact with the source which lies outside time. Every traditional doctrine is by definition immutable in essence but its formulation may be renewed within the framework of the given ““conceptual style ’—and so on the basis of the constants of the tradition—in relation to different possible modes of intuition and according to human circumstances.