The things we say in bars. The way we use the phone. The things we say to teachers and to strangers on the street. Our body language at the museum. The things we say to plumbers and the things we say in planes. The things we write in instant messages. The way we talk to doctors. The things we tell each other when we're standing in the weeds outside a broken-down bus in Texas. The way we talk to children. The way we write in e-mails and the things we write in blogs. The things we talk about when it's time for bed. The way we text. The things we say in elevators and the way we talk to cops. The way we interact with car mechanics. The words we use in conference rooms and the things we say to waiters. The things we write on Facebook. The things we say in court. The things we say to ourselves. Everything we don't say.