What is the author's style in Selected Works by Marcus Tullius Cicero?

Cicero: Selected Works is a compilation of many of Cicero's most important writings. However, it not only contains Cicero's work but helpful commentary from the author, along with a lengthy introduction and several helpful appendices. The introduction covers Cicero's struggle against tyranny, his views on how humans can live together and cooperation, some struggles with translating Cicero and his fame in his time and afterward.