This quote by Richard M. Nixon is a reflection of his mistrust of journalism. Nixon believed that journalism was prejudiced versus him and his administration, and that they were actively working against him. He felt that the press was out to get him and was not reporting the fact. Nixon's mistrust of the press was so strong that he even went as far as to create an "enemies list" of reporters and media outlets that he felt were actively working versus him. Nixon's quote is a suggestion of the power of the press and how it can be used to form public opinion. It likewise acts as a cautioning to those in power to be wary of journalism and to be aware of how their words and actions can be translated and reported.
"When the principles that run against your deepest convictions begin to win the day, then the battle is your calling, and peace has become sin. You must at the price of dearest peace lay your convictions bare before friend and enemy with all the fire of your faith"