In the professional world, opinions can be dangerous. Holding a controversial opinion can damage your reputation; stating an opinion that contradicts your boss's can leave you vulnerable; voicing your opinion at the wrong time can make you appear foolish. The old adage attributed to Abraham Lincoln goes, "It's better to remain silent and be thought a fool than to speak out and remove all doubt," and in the realm of business, that seems to be the truth. However, holding your opinions back can actually be more damaging than speaking them. In fact, opinions are what fuel momentum--all ideas, plans, and decisions begin and end with opinions, and if you consistently refrain from voicing yours, you'll be doing both your employer and your career a disservice.
Via Bonnie Hohhof