The great sayings of Upanisads as characterized by the Avaita school of Vedanta with Maha meaning great and Vakya a sentence.
- Aham Brahmasmi – I am Brahman (Brihadaranyaka Upanishad)
- Ayam Atma Brahma – This Self (Atma) is Brahman (Mandukya Upanishad)
- Prajnanam Brahma – Consciousness is Brahman (Aitareya Upanishad)
- Tattvamasi – You are That ( Chandogya Upanishad)
An Audio Course (Course Code – AVG1215) on Vedanta Texts- Upanisad : Four Mahavakyas by Swami Dayananda Saraswati.