Friendship (as the ancients saw) can be a school of virtue, but also (as they did not see) a school of vice. It is ambivalent. It makes good men better and bad men worse.
C. S. LewisEnemy-occupied territory---that is what this world is. Christianity is the story of how the rightful king has landed, you might say landed in disguise, and is calling us to take part in a great campaign of sabotage.
C. S. Lewis