It is physically impossible to listen with your mouth open

You may also have seen this on your Starbucks Latte: “You can learn a lot more from listening than you can from talking. Find someone with whom you don’t agree in the slightest and ask them to explain themselves at length. Then take a seat, shut your mouth, and don’t argue back. It’s phyiscally impossible to listen with your mouth open.” – John Moe, “Conservatize Me”