People who live in glass houses should not throw stones

Say what?
Those who are vulnerable should not attack others.

Origin
The proverb has been traced back to Geoffrey Chaucer's 'Troilus and Criseyde' (1385). George Herbert wrote in 1651: 'Whose house is of glass, must not throw stones at another.' This saying is first cited in the United States in 'William & Mary College Quarterly' (1710). Twenty-six later Benjamin Franklin wrote, 'Don't throw stones at your neighbors', if your own windows are glass.' 'To live in a glass house' is used as a figure of speech referring to vulnerability." From "Random House Dictionary of Popular Proverbs and Sayings" (1996) by Gregory Y. Titelman (Random House, New York, 1996).

Technorati Tags: sayings, Words, Word Origins,Idioms,
Proverbs