Falsehood imitates truth and it seems impossible to know which is which. What, therefore, is the difference between the upholders of truth and the champions of falsehood? This is the unfailing sign: men of truth are especially dedicated to the task of redeeming captives. They hate slavery. This is the test which you can tell the difference.
Rabbi Naham of Bratslav
Ed. Arthur Hertzberg, Judaism; Great Religions of Modern Man (George Braziller New York 1962 ©1961) p.110