“ I OWE Christianity a debt, and so, I believe, does the world we have lived in for the last 2000 years. ” ​ — Foreword, Two Thousand Years — ​ The First Millennium: The Birth of Christianity to the Crusades.
” SAYA berutang kepada Kekristenan, dan saya yakin, demikian pula dunia tempat kita tinggal selama 2.000 tahun terakhir ini. ” — Kata pengantar, Two Thousand Years ​ — The First Millennium: The Birth of Christianity to the Crusades.