No flies come into a closed mouth

Native American Indians value silence and recommend it in stories and pointed sayings ... "Listen, or your tongue will make you deaf" ... "No flies come into a closed mouth" ... and a clause in an Indian prayer, "Oh my Grandfather, may I lose no good opportunity to hold my tongue." They feel comfortable in silence, and are often irritated, or at best amused, by our "windmill machine" of constant chatter. Silence, "going behind the blanket," removing oneself from useless or annoying contact are highly developed techniques, second nature to the Indian way.

~ from SNOWY EARTH COMES GLIDING by Evelyn Eaton
Snowy Earth Comes Gliding
By Evelyn Eaton