This ancient text outlines the basic ideas of philosophy, psychology and the practice of yoga. Cognitive processes, mental structures, levels of development, unconscious functions, causes and factors that distort the perception of reality and give rise to false identifications are described. A systemic classification of higher cognitive states and the basics of contemplative practices are also provided. The publication contains Devanagari text, transliteration, multiple word-by-word and literary translations, notes and the necessary reference apparatus.
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