Nisargadatta MaharajThe sense of being, of 'I am' is the first to emerge. Ask yourself whence it comes, or just watch it quietly. When the mind stays in the 'I am' without moving, you enter a state that cannot be verbalized but can be experienced. All you need to do is try and try again.

Nisargadatta Maharaj

Īṣha Upaniṣad Reference Materials:

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Swami Paramarthananda
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Swami Sarveshananda
8 classes (~90 mins each)

Swami Anubhavananda
7 classes (~60 mins each)

Ishavasya Upanishad Retreat 2 of 7 @ Sydney 2017(English)20170415 090040 YT

Swami Tadatmananda
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Swami Rama
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Ishopanishad (2/7) Swami Rama

Swamini Atmaprakashananda
18 classes (~90 mins each)

Isha Upanishad verse 12-14