The '''Upanishads''' (Devanagari: उपनिषद्,: upaniṣad, also spelled "Upanisad") are [[Hindu]] [[scriptures]] that constitute the core teachings of [[Vedanta]]. They do not belong to any particular period of [[Sanskrit]] [[literature]]: the oldest, such as the [[Brhadaranyaka]] and [[Chandogya]] Upanishads, date to the late [[Brahmana]] period (around the middle of the first millennium BCE), while the latest were composed in the medieval and early modern period. The Upanishads realize monist [[idea]]s, some of which were hinted at in the earlier [[text]]s, and they have exerted an important influence on the rest of Hindu and Indian [[philosophy]], and are considered one of the 100 Most Influential Books Ever Written. | The '''Upanishads''' (Devanagari: उपनिषद्,: upaniṣad, also spelled "Upanisad") are [[Hindu]] [[scriptures]] that constitute the core teachings of [[Vedanta]]. They do not belong to any particular period of [[Sanskrit]] [[literature]]: the oldest, such as the [[Brhadaranyaka]] and [[Chandogya]] Upanishads, date to the late [[Brahmana]] period (around the middle of the first millennium BCE), while the latest were composed in the medieval and early modern period. The Upanishads realize monist [[idea]]s, some of which were hinted at in the earlier [[text]]s, and they have exerted an important influence on the rest of Hindu and Indian [[philosophy]], and are considered one of the 100 Most Influential Books Ever Written. |