Svetaketu — Tat Tvam Asi

Svetaketu returned from twelve years of Vedic schooling, proud and puffed up with learning. His father Uddalaka noticed and asked, "Did you learn that by which the unheard becomes heard, the unthought becomes thought?" Svetaketu was confused. Uddalaka began teaching through simple experiments. He asked Svetaketu to dissolve salt in water. The next morning, the salt was invisible but every sip tasted salty. "That subtle essence you cannot see — it pervades this entire universe," said Uddalaka. He then asked Svetaketu to break open a banyan seed. Inside was nothing visible, yet from that nothingness a mighty tree grows. "That invisible essence is the Self of all. And that, Svetaketu, is what you are — Tat Tvam Asi." The boy finally understood that true knowledge is knowing the divine within.