What are the main topics in Part One of The Art of Public Speaking?

In Part One: Speaking and Listening, plagiarism is immediately addressed. The text makes it clear to students that avoiding plagiarism is as important in speaking as it is in writing. The author stresses a speaker loses all credibility if caught using another speaker's material. It is noteworthy that the book deals with the ethical issues of public speaking before instructing the students on how to go about writing and delivering a great speech.