"If nobody said anything unless he knew what he was talking about, a ghastly hush would descend upon the earth"

This quote by Alan Patrick Herbert is an amusing way of explaining how often people talk without truly understanding what they are talking about. It suggests that if people just spoke when they had something meaningful to say, the world would be a much quieter place. This quote is a reminder to think before we speak and to ensure that we are well notified before we share our opinions. It also works as a caution that our words can have a powerful effect, so we should be careful to just state things that are true and meaningful. This quote encourages us to be more mindful of our words and to think before we speak.