Verse 18.30
प्रवृत्तिं च निवृत्तिं च कार्याकार्ये भयाभये । बन्धं मोक्षं च या वेत्ति बुद्धिः सा पार्थ सात्त्विकी...
हे पार्थ ! जो बुद्भि प्रवृति मार्ग और निवृत्ति मार्ग को कर्तव्य और अकर्तव्य को, भय और अभय को तथा बन्धन और मोक्ष को यथार्थ जानती है — वह बुद्भि सात्विकी है| 
Pure and SAATVIC wisdom, O Partha, is that which one possesses when one knows when to go to a certain point and when to return; what should and should not be done; what fear is and what courage is; and who recognizes the difference between bondage to this world and freedom from it.