QUOTE : Another friend of mine, whose insatiable scientific curiosity has impelled him to the most out-of-the-way researches and to the acquisition of encyclopaedic knowledge, has assured me that the Yogi by their practices of withdrawal from the world, concentrating attention on bodily functions, peculiar methods of breathing, actually are able to produce new sensations and diffused feelings in themselves which he regards as regressions to primordial, deeply buried mental states.