Even a fool is thought wise if he keeps silent, and discerning if he holds his tongue (Proverbs 17:28)
Sometimes it really is better not to say anything isn’t it?
There are times when it can be difficult not to pass comment, or try to show your knowledge (limited as it may be) of something. However just as Proverbs says, it can be in those moments that we can really show the best in ourselves.
So think about what you say and when you say it, because your words can show how much of a fool your are or how wise you are!