"He that studieth revenge keepeth his own wounds green, which otherwise would heal and do well." ~ John Milton
"Revenge...is like a rolling stone, which, when a man hath forced up a hill, will return upon him with a greater violence, and break those bones whose sinews gave it motion." ~ Albert Schweitzer
"An eye for an eye would make the whole world blind." ~ Mohandas GhandiIn 2009 CBS Sunday Morning did an interesting report about the varied ways people respond to those who inflict suffering on them. You can see it here.