The UpanishadsThe Upanishads, a cornerstone of Hindu thought and one of the most significant works from ancient India, explore foundational concepts such as samsara, Brahman, atman, karma, dharma, and moksha, forming the essence of Indian philosophy. Together with the Bhagavad Gita and Brahmasutra, the Upanishads lay the groundwork for the later schools of Vedanta. Swami Paramananda, an early Indian teacher who introduced Vedanta to the United States, was a mystic,