Although the word Maya plays a prominent part in Advaita teaching and is given at least three meanings--inherent change, unreality, and appearance--it must be examined and analysed from the philosophic point of view with regard to the history of Advaita and its followers. From what has already been said about the nostalgia of the more spiritually minded of the Hindu peoples--their yearnings for these past glories and past times--this was carried to an extreme extent and made the present look more like a dream towards which they were looking for reality in vain. We must admire them for this fidelity to their ancient, very ancient, faith and teachers. But it must be remembered that as humanity slowly evolves through the ages, so must the teaching evolve with it to fit the kind of awareness they have developed and especially to correct it when it runs to extremes. The idea of mentalism, which says that all is in the mind and that Mind is indeed the real, must not be misunderstood and turned into a way of escape in order either to live in those past glories (as the Oriental did) or to excuse our own laziness, as we may do.
-- Notebooks Category 15: The Orient > Chapter 2 : India Part 1 > # 376