Katha Upanishad Verse 1.3.9

The person who has a discriminating intellect as the driver and a controlled mind as the reins reaches the end of the spiritual journey—the “highest place of Vishnu” or the Absolute Truth.

Sanskrit Verse

विज्ञानसारथिर्यस्तु मनःप्रग्रहवान्नरः ।
सोऽध्वनः पारमाप्नोति तद्विष्णोः परमं पदम् ॥ ९ ॥

Transliteration

vijñānasārathiryastu manaḥpragrahavānnaraḥ |
so’dhvanaḥ pāramāpnoti tadviṣṇoḥ paramaṃ padam || 9 ||

Translation

But the man who has a discriminating intellect for the driver and a controlling mind for the reins, reaches the end of the road, i.e., that highest place of Vishnu.

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Cross-references:

• Dhammapada Verse 17.2 (The true charioteer checks rising anger)