In this quote, Arthur Balfour suggests that the most precise and insightful biography must be composed by someone who is considered an "intense opponent" of the subject. This implies that the person composing the bio must have a deep understanding and knowledge of the topic, however also have a crucial and impartial point of view. Balfour thinks that a real opponent would have the ability to see and expose the flaws and weak points of the subject, offering a more well-rounded and truthful representation. This quote highlights the value of objectivity and thoroughness in biographical writing, and challenges the concept that just a good friend or admirer can accurately portray an individual's life.
"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"
