D. J. Medley, The Church and the Empire
“ Medieval thought, then, drawing its materials from Roman, Germanic and Christian sources, conceived the Universe as Civitas Dei, the State of God, embracing both heaven and earth, with God as at once the source, the guide and the ultimate goal. Now this Universe contains numerous parts, one of which is composed of mankind; and the destiny of mankind is identified with that of Christendom. Hence it follows that mankind may be described as the Commonwealth of the Human Race; and unity under one law and one government is essential to the attainment of the divine purpose. ”
