In Chapter 8, Lilienfeld argues that seemingly simple functions, such as speaking and thinking, are more complex than we perceive them to be. Specifically, he argues that the interpretation of language is based on the context in which it used. For example, the phrase "shut up" can be interpreted as a command to stop talking or an exclamation of astonishment.
The section about extralinguistic information, or nonverbal cues (such as facial expression and tone of voice), struck me as most intriguing; How we say something is just as, if not more, important than what we say. The tone of voice and/or facial expression we use when speaking can convey a more powerful message than our actual words. I found this section most interesting because of the truth behind this message: more often than not, I pay more attention to visual cues and fluctuation in tone of voice than what is actually being said. Furthermore, nonverbal cues can often foreshadow conversation, and it is crucial that we are able to read people's body language and facial expressions so that we can react accordingly. Failure to recognize this extralinguistic information can result in serious misunderstandings and bring about conflict.