Verse 2.66
नास्ति बुद्धिरयुक्तस्य न चायुक्तस्य भावना । न चाभावयतः शान्तिरशान्तस्य कुतः सुखम् ॥ २.६६ ॥
न जीते हुए मन और इन्द्रियोंवाले पुरुषमें निश्चयात्मिका बुद्धि नहीं होती और उस अयुक्त मनुष्यके अन्तःकरणमें भावना भी नहीं होती तथा भावनाहीन मनुष्यको शान्ति नहीं मिलती और शान्तिरहित मनुष्यको सुख कैसे मिल सकता है?
One who cannot control his senses is one who is lacking in steady wisdom and intelligence, and also lacks proper feelings or sentiments (thoughts). A person who cannot think properly and make decisions with a clear mind, cannot have peace of mind, and without peace of mind there can be no happiness.