Is the sentence silence is golden a proverb?

Yes, "Silence is golden" is a proverb. It is a well-known saying that expresses a moral or practical truth. It is often used to advise people to remain quiet in certain situations, as speaking may not be beneficial or may even lead to negative consequences. The proverb suggests that it is sometimes better to keep one's thoughts or opinions to oneself, as silence can be a valuable tool in certain circumstances.