What is the author's tone in The Information: A History, a Theory, a Flood by James Gleick?

It is clear through Gleick's writing that he is dedicated to his subject and that he greatly admires the brilliant people he profiles who made historic contributions to the development of information theory, the computer, and the Internet. He emphasizes the many ways in which most of these thinkers were ahead of their time and explains how their important ideas were often forgotten at the time they were presented but later discovered to be of great significance.