Those who have not had the inward revelation granted them, who have not awakened what the Hindu yogis call antardrishti, a kind of clairvoyant insight, often believe that mentalism is mere theory and that its talk of the world's unreality is mere verbalism. Even some among the seers have not seen this, although they have seen much else that fleshly eyes cannot. Sri Aurobindo in India, for instance, disputed mentalism, although his neighbour and contemporary, Ramana Maharshi, fully accepted it. Rudolf Steiner in Switzerland likewise disputed it although J.J. van der Leeuw, his Dutch contemporary, understood and explained it. This situation is strange, but among the sages with whom I found the deepest penetration into the nature of things and who were nearly all mentalists, some observed that the capacity to receive and understand the mentalist doctrine was the sharpest of all tests to which a truth-seeker could be subjected.
-- Notebooks Category 21: Mentalism > Chapter 4 : The Challenge of Mentalism > # 101
