"A yawn is a silent shout"

This quote by Gilbert K. Chesterton is a clever way of expressing the concept that a yawn can be an indication of exhaustion or dullness. It suggests that despite the fact that a yawn is quiet, it can still be a powerful expression of feeling. The quote suggests that a yawn can be a way of communicating a requirement for rest or a lack of interest in something. It can be a sign of disappointment or a method of expressing a desire to proceed to something else. In this way, a yawn can be a silent shout, a way of expressing a feeling without saying a word. This quote is a suggestion that even though a yawn may seem irrelevant, it can still be a powerful kind of communication.