The Epistle of Barnabas is commonly categorized among the Apostolic Fathers alongside the writings of St. Clement, St. Ignatius, and St. Polycarp. This epistle can be dated near the end of the first century and was considered important by many of the early church fathers. It was most likely written to new Jewish believers in response to the growing heresy that the Old Law was still necessary for salvation.

Glory to God for the men of old who endured the persecutions of this world with joy and faith. Much can be learned from those who have looked death in the face and yet remained true to the Lamb of God who takes away the sins of the world.

In this, the first prose history in European civilization, Herodotus describes the growth of the Persian Empire with force, authority, and style. Perhaps most famously, the book tells the heroic tale of the Greeks' resistance to the vast invading force assembled by Xerxes, king of Persia. Here are not only the great battles - Marathon, Thermopylae, and Salamis - but also penetrating human insight and a powerful sense of epic destiny at work.

The way to perfection is simple - to unite one’s will with God’s, putting into action the prayer “Thy will be done". In this precious short work, Uniformity with God's Will, St. Alphonsus Liguori explains the importance of conforming one’s will to God’s and how to do so; how God is glorified by our resignation to his will even more than by our acts; how to gain peace of mind and serenity by trusting in God, accepting what he wills for our lives, and following his commands.  

Few ideas have been as influential in the development of moral, political, legal, and economic thought in the broad Western tradition as the idea of natural law. It is also true that the understanding of natural law and its influence on specific norms and institutions—rights, justice, private property, rule of law, limited government—is not anywhere near as widespread in the 21st century as it was just 100 years ago.