Ramana MaharshiThe state we call realization is simply being oneself, not knowing anything or becoming anything.

Ramana Maharshi

Bṛhadāraṇyaka Upaniṣad Reference Materials:

Video/Audio Lectures

Swami Tadatmananda
35 classes (~60 mins each)

Swami Krishnananda
45 classes (~45 mins each)

Swami Paramarthananda
160 classes (~50 mins each) 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12