na hi draṣṭuṃ śakyam

na (not) hi (indeed) draṣṭuṃ (to see) śakyam (is possible)

Advaita Vedānta (Ādi Śaṅkarācārya): This verse, 'na hi draṣṭuṃ śakyam,' underscores the transcendent nature of the ultimate reality, Brahman. Shankara's commentary on the Muṇḍakopaniṣad highlights that the seer cannot be seen, just as the eye cannot see itself. This non-dual reading points to the identity of Brahman and Ātman, the individual self. Shankara's reasoning in his commentary on the Brahma Sūtras (BS 3.2.13) and the Chāndogya Upaniṣad (CU 6.2.1) emphasizes that the ultimate reality transcends the cognizer-cognition-cognized triad, implying that the seer, the seeing, and the seen are not separate entities in the ultimate analysis. This verse thus serves as a pointer to the ineffable, unchanging, and all-pervading nature of Brahman-Ātman, which cannot be objectified or seen as separate from the self. The recognition of this non-duality is the key to liberative knowledge.

Vaiṣṇava tradition (Rāmānujācārya): The verse 'na hi draṣṭuṃ śakyam' is interpreted in the Vaiṣṇava tradition as affirming the transcendent yet personal nature of Īśvara. Rāmānujācārya, in his commentary on the Brahmasūtra (BS 3.2.15), argues that while the ultimate reality cannot be seen (or known) through our senses or ordinary cognitive processes, it can be known through scripture and devotion. This devotional reading emphasizes the loving relationship between the jīva (individual self) and Īśvara (the Lord). The unseen nature of the ultimate reality, according to Rāmānuja, calls for a surrender of the ego and a reliance on the grace of Īśvara. Madhvācārya, in his Dvaita perspective, further nuances this by positing a real difference between the Lord and the souls, but agrees that direct perception of the ultimate reality is not possible for the finite self, thus emphasizing the role of faith and revelation.

Neo-Vedānta (Swami Vivekānanda / S. Rādhākrishnan): Swami Vivekānanda, in his lectures and writings, often emphasized the practical and universal application of Advaitic principles found in verses like 'na hi draṣṭuṃ śakyamyam.' He saw this as a call to introspection, to look beyond the external world and to seek the truth within. Vivekānanda, in his 'Complete Works,' Volume 1, emphasizes that the truth about the Self cannot be perceived through the senses but can be realized through self-inquiry and meditation. Similarly, S. Radhakrishnan, in his philosophical works, interprets this verse as pointing to the necessity of moving beyond the limits of empirical knowledge to realize the ultimate reality. This involves recognizing the transcendent, universal Self that underlies all existence. For Radhakrishnan, this verse serves as a reminder of the importance of subjective experience and the cultivation of a deeper, spiritual awareness in contemporary life, making it relevant to all people regardless of their religious or cultural background.

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