It is better to keep your mouth closed and let people think you are a fool than to open it and remove all doubt.
I think most all of us have, at some point in our careers, had a difficult relationship with a supervisor. While some supervisors are motivating, reliable, and well-intentioned, some supervisors can be close-minded, reserved, and difficult to communicate with. Kayleen Schaefer from the College Journal addresses the question “What to do when a boss gives you the silent treatment?”