satyaṃ vada dharmaṃ cara

tvam (you) satyaṃ (truth) vada (speak) dharmaṃ (righteousness) cara (follow)

Advaita Vedānta (Ādi Śaṅkarācārya): The verse 'satyaṃ vada, dharmaṃ cara' is interpreted in the context of the ultimate reality, Brahman. Ādi Śaṅkarācārya, in his commentary on the Chāndogyopaniṣad, highlights the importance of truth and righteousness as a means to realize the non-dual nature of Brahman. Speaking the truth and following dharma are not just moral obligations but a way to cultivate self-awareness, leading to the understanding of the identity of the individual self (ātman) with the universal self (Brahman). This verse is seen as a pointer to the higher truth, where the distinctions between subject and object, self and other, dissolve. Śaṅkara's commentary on this verse emphasizes the role of satya (truth) and dharma (righteousness) in transcending the worldly conditioning and realizing the ultimate non-dual reality.

Vaiṣṇava tradition (Rāmānujācārya / Madhvācārya): In the Vaiṣṇava tradition, the verse 'satyaṃ vada, dharmaṃ cara' is understood in the context of the relationship between the individual self (jīva) and the Supreme Lord (Īśvara). Rāmānujācārya, in his commentary on the Chāndogyopaniṣad, sees this verse as an exhortation to cultivate virtues that are pleasing to the Lord. Speaking the truth and following dharma are considered essential for developing devotion to God and for maintaining a pure and loving relationship with Him. This verse is also seen as a reminder of the importance of living a life that is surrendered to the will of God, with truth and righteousness being the guiding principles. Madhvācārya, in his commentary, further emphasizes the role of dharma in distinguishing between the real and the unreal, and in ultimately realizing the difference between the individual self and the Supreme Self.

Neo-Vedānta (Swami Vivekānanda / S. Rādhākrishnan): Swami Vivekānanda, in his lectures and writings, often emphasized the practical application of the verse 'satyaṃ vada, dharmaṃ cara'. He saw this verse as a call to action, encouraging individuals to embody truth and righteousness in their daily lives. Vivekānanda believed that the pursuit of truth and the practice of dharma could lead to personal transformation and social change. He also highlighted the importance of self-awareness and the cultivation of virtues such as non-violence, compassion, and selflessness. S. Rādhākrishnan, in his commentary on the Upaniṣads, further develops this idea, seeing the verse as a reminder of the importance of living a life that is guided by principles of justice, equality, and freedom. This verse, according to Radhakrishnan, has a universal relevance and can be applied to contemporary life, inspiring individuals to work towards creating a more just and harmonious world.

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