What is the author's style in Augustine of Hippo: A Biography, by Peter Brown by Peter Brown?

The author takes the majority of his information about this historical figure from an autobiography, quite possibly from an English translation of a work originally produced in Latin. The author writes the Preface with a clear and intentional subjectivity. However, during the main body of the text he keeps his own personality as only a subtle influence, or altogether 'aside'. Peter Brown writes about Augustine from a secular perspective. While he does not remotely deny that this Augustine is a Roman Catholic - he is a Roman and a Catholic, he indicates those who have been canonized as Saints with a clear S. However, it is left without any further ado.