Your quick spirited letter came duly. Accept my thanks. But dear one, The Golden Rule must guide all your acts. Thirty years ago and over, I taught the Old Testament rules or law of defense. But now I no longer teach the law, but the Gospel in this line, even the rule of our blessed Lord, viz., Love your enemies, and return good for evil. And, thank God, I practice these rules daily and hourly, leaving the punishment for mental malpractice alone in His hands who cannot fail in justice or mercy or wisdom. Mary Baker Eddy (Letters of Mary Baker Eddy to Augusta E. Stetson C.S.D., Emma Publishing Society, p. 92-93)