That’s my battle cry.
I have plenty of mantras: "Isolate changes", "Be repeatable", "Put yourself in the user’s shoes", and several others. These are things that I believe, practice, and preach. My battle cry, however, is something I actively pursue and defend. If someone isn’t isolating their changes or is failing to think about their users, I’ll probably say something. If someone is being unclear, I’ll definitely say something.