What is the author's tone in Capitalism, the Unknown Ideal by Ayn Rand?

The book is comprised of different chapters by different four different authors: Ayn Rand, Nathaniel Branden, Alan Greenspan and Robert Hessen. Most of the articles are written by Rand and all are written in the first person point of view in which the authors openly propose their views. Each of the authors is telling the reader his/her point of view about a various subject, all of which fall under the framework of objectivism. The authors each support their views with various examples.