The Upanishads: Translated and Commentated from the Original Sanskrit Text

The value of the Upanishads, however, does not rest upon their antiquity, but upon the vital message they contain for all times and all peoples. There is nothing peculiarly racial or local in them. The ennobling lessons of these Scriptures are as practical for the modern world as they were for the Indo-Aryans of the earliest Vedic age. Their teachings are summed up in two Maha-Vakyam or "great sayings":--Tat twam asi (That thou art) and Aham Brahmasmi (I am Brahman). This oneness of Soul and God lies at the very root of all Vedic thought, and it is this dominant ideal of the unity of all life and the oneness of Truth which makes the study of the Upanishads especially beneficial at the present moment.