Loud talk, long talk, wild talk, talk full of anger and hate..all these affect the health of the person. They breed anger and hate in others.  They wound, excite, enrage and estrange.  When you are silent, you have the leisure and the chance to dive within and examine your failings and faults. You should have more inclination in finding your own, than to seek them in others. If your foot slips, you earn a fracture.  If your tongue slips, you have fractured someone's faith or joy. That fracture can never be set right; that wound will fester for ever.  Therefore, use the tongue with great care. The softer you talk, the less you talk, the sweeter you talk, the better for you and the world.

- Sathya Sai Speaks,  Vol 5, Ch 21, Mar 29 1965. 

"Silence is golden.  The silent person has no enemies." - Baba