Respectfully Quoted: A Dictionary of Quotations. 1989.
Jean de Bloch (18361902)
An analysis of the history of mankind shows that from the year 1496 B.C. to the year 1861 of our era, that is, in a cycle of 3357 years, were but 227 years of peace and 3130 years of war: in other words, were thirteen years of war for every year of peace. Considered thus, the history of the lives of peoples presents a picture of uninterrupted struggle. War, it would appear, is a normal attribute to human life.
JEAN DE BLOCH, The Future of War, trans. R. C. Long, p. lxv (1903).