The most impressive testimony to Buchan’s classical scholarship remains the biography of Julius Caesar (1932) and that of Augustus (1937). Augustus covers an enormous subject at a gallop and its style is a delight. As a politician and administrator (he was Governor-General of Canada at the time) Buchan showed real insight into Augustus’s achievement in establishing an empire that lasted one thousand five hundred years (if the Byzantine empire is included).
Michael & Isobel Haslett, 2001
Available to read at https://penelope.uchicago.edu/Thayer/E/Gazetteer/People/Augustus/BUCAUG/home.html