
“The old law of an eye for an eye leaves everybody blind.”
"An eye for an eye leaves everybody blind" is of indefinite origin, but has been disputably attributed to various figures, including Mahatma Gandhi. This variant describing it as an "old law" is attributed to King in The Words of Martin Luther King, Jr., (2008) http://books.google.com/books?id=irMxJS36904C&redir_esc=y by Coretta Scott King, Second Edition ; it also occurs in the credits of Spike Lee's movie Do the Right Thing (1989).
Disputed