Thomas More: Will, I'd trust you with my life. But not your principles. You see, we speak of being anchored to our principles. But if the weather turns nasty you up with an anchor and let it down where there's less wind, and the fishing's better. And "Look," we say, "look, I'm anchored! To my principles!
Robert Bolt (2013). “A Man For All Seasons”, p.43, A&C Black