I found this little jewel in Eckhart Tolle’s, A New Earth: Awakening to Your Life’s Purpose, a book I highly recommend. It is a masterpiece of what might be described, from a Catholic viewpoint, as natural theology, full of all sorts of useful insights about his primary notion: that the self is not disclosed anywhere but in the present moment and that the ego uses time to conceal both itself and what he calls the pain body. This is not a ‘live for the moment’ book at all but rather a fascinating look at the dynamics between self and ego through the lens of the present and all other moments, future and past.
“What cannot be seen with the eye, but that whereby the eye can see: know that alone to be Brahman the Spirit and not what people here adore.
What cannot be heard with the ear but that whereby the ear can hear: know that alone to be Brahman the Spirit and not what people here adore…
What cannot be thought with the mind, but that whereby the mind can think: know that alone to be Brahman the Spirit and not what people here adore.”