Origin: L. Tranquillus; probably fr. Trans across, over _ a word akin to quietus quiet: cf. F. Tranquille. See Quiet.
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... people spent thousands of years to understand subjective states of mind and developed techniques and methods that could make the mind calm, quiet, tranquil and peaceful....... the practice of yoga and meditation led to spiritual development / evolution. In just 250 years Industrial Society has ...
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