Upanishads? What are these texts?
Literally, the word “Upanishads” in Sanskrit means “sitting down near” or “sitting down at the feet”. So this is the basic building block...
Aum! Purnamadah purnamidam,
purnāt purnam-udacyate.
purnasya purnamādāya,
purnam-eva-avashishyate.
Aum! Shantih! Shantih! Shantih!
Isha Upanishad
"The invisible brahman is infinite; the objects of the visible universe are also infinite. From infinite brahman, infinite universes come out. The infinite brahman still remains infinite, even though infinite universes come out of it."