Silence is best -Sanskrit subhashitam

पठतो नास्ति मूर्खत्वम् जपतो नास्ति पातकं |

मौनिनः कलहो नास्ति न भयं चास्ति जाग्रतः ||

Meaning:

Learned persons will never be foolish, those who perform religious practices will never commit sins, those who are calm will never be involved in quarrels, and those who are always alert and conscious will never be afraid of any danger.