In the whole world, there is no study so beneficial and so elevating as that of the Upanishads.
‘Tat tvam asi’ reveals a great truth about the underlying unity in this world. Every living being in this world is a form of the Supreme being.
The Upanishads contain four mahavakyas—great sayings, that sum up the teachings of the Upanishads. The most famous of these is—Aham brahmasmi.