This document discusses positive and negative messages in communication. Positive messages convey favorable information and are intended to motivate or please the recipient, using words like "thank you", "great job", and "you can do it". Negative messages convey unpleasant information and are intended to disappoint or anger the recipient, using words like "I'm disappointed" and "that's impossible". The document provides examples of language to express both positive and negative messages and emphasizes being respectful even when conveying negative information.