This chapter discusses the importance of distinguishing what an author says from what other sources say. It introduces the concept of "voice markers", which are words or phrases that signal to the reader when an author is discussing their own perspective versus reporting on another perspective. Some examples of voice markers are using "I" to signify personal agreement or disagreement, and signal verbs that show when an author is referring to another source rather than stating their own view. The chapter emphasizes that voice markers are necessary to avoid confusing the reader about who is saying what. It provides some templates for incorporating voice markers effectively.