Tomat0 quoted The Archetypes and the Collective Unconscious by Carl Jung (Collected Works, #9i)
Though the Christian view of the world has paled for many people, the symbolic treasure-rooms of the East are still full of marvels that can nourish for a long time to come the passion for show and new clothes. What is more, these images—be they Christian or Buddhist or what you will—are lovely, mysterious, richly intuitive. Naturally, the more familiar we are with them the more does constant usage polish them smooth, so that what remains is only banal superficiality and meaningless paradox. The mystery of the Virgin Birth, or the homoousia of the Son with the Father, or the Trinity which is nevertheless not a triad—these no longer lend wings to any philosophical fancy. They have stiffened into mere objects of belief.
So it is not surprising if the religious need, the believing mind, and the philosophical speculations of the educated European are attracted by the symbols of the East—those grandiose conceptions of divinity in India and the abysms of Taoist philosophy in China—just as once before the heart and mind of the men of antiquity were gripped by Christian ideas. There are many Europeans who began by surrendering completely to the influence of the Christian symbol until they landed themselves in a Kierkegaardian neurosis, or whose relation to God, owing to the progressive impoverishment of symbolism, developed into an unbearably sophisticated I-You relationship—only to fall victims in their turn to the magic and novelty of Eastern symbols. This surrender is not necessarily a defeat; rather it proves the receptiveness and vitality of the religious sense.
— The Archetypes and the Collective Unconscious by Carl Jung (Collected Works, #9i)