naiṣā tarkeṇa matir āpaneyā
naiṣā tarkeṇa matir āpaneyā
proktānyenaiva sujñānāya preṣṭha |
(Kaṭha Upaniṣad: 1.2.9)
“This understanding is not attainable
By means of argumentation.
Only [when] taught by another
Does it lead to apt knowledge,
O dearest one.”