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From the Foreword: 'The matter which I am laying before the public in this book formed the content of lectures which I delivered during last winter at the Theosophical Library in Berlin. I had been requested by Grafin and Graf Brockdorff ‘to speak upon Mysticism before an audience for whom the matters thus dealt with constitute a vital question of the utmost importance. Ten years earlier I could not have ventured to fulfil such a request. Not that the realm of ideas, to which I now give expression, did not even then live actively within me.'