Indeed, the very root of wisdom, is the freedom of the senses from mistake. It is the senses which produce error and grief. One whose senses are subject to mistake can never be said to have acquired wisdom.
यस्मै प्राज्ञाः कथयन्ते मनुष्याः प्रज्ञामूलं हीन्द्रियाणां प्रसादः। मुह्यन्ति शोचन्ति तथेन्द्रियाणि प्रज्ञालाभो नास्ति मूढेन्द्रियस्य॥