Overlap

I found myself interested in the underpinnings of Zen Buddhism. That eventually led to my reading of The Creed of Half Japan, by Arthur Lloyd, [1911]. In it, I found an interesting reference to "three modes of expression":

(64) In truth, there were, in germ, in the new Buddhism which was then coming into shape in the Indus valley, three modes of expression which must all be taken into account, if we would understand the Japanese Mahāyāna of to-day. They are not confined to Buddhism: they are found in Gnosticism, in Hinduism, in Christianity; they are, in fact, universals of religion. They may, for brevity's sake, be termed the Way, the Truth, and the Life; the appeal to the affections, the intellect, the spiritual imagination of Faith.

Eckhart Tolle said essentially the same thing (and I do not recall where and when), that each of those religions had such a mystical offshoot.