《罗马帝国衰亡史》是英国历史学家爱德华·吉本创作的一部历史著作。
　　《罗马帝国衰亡史》共有六卷，分期出版。第一卷出版于1776年，第二、三卷出版于1781年，第四、五、六卷出版于1788年。
　　《罗马帝国衰亡史》包括罗马帝国后期和整个拜占庭帝国的历史事件。可以分为两大部分。第一部分包括1—47章，描写的是公元641年以前罗马500多年的历史。头三篇是全书的开篇，简要概括公元98年至公元180年罗马帝国相对稳定的时期，自第4章从公元180年罗马帝国开始“衰亡”起，按时间顺序叙述，内容更加详尽。第二大部分包括第五、六卷，写从公元641年拜占庭皇帝希拉克略逝世到1453年土耳其人攻陷君士坦丁堡约800年的历史，最后以16世纪欧洲宗教改革作为结束。

　　《罗马帝国衰亡史（第三卷）》：
　　The hope， that truth and wisdom would be found in the assemblies of the orthodox clergy， induced the emperor to convene， at Constantinople， a synod of one hundred and fifty bishops， who proceeded， without much difficulty or delay， to complete the theological system which had been established in the council of Nice. The vehement disputes of the fourth century had been chiefly employed on the nature of the Son of God； and the various opinions which were embraced， concerning the Second， were extended and transferred，
　　by a natural analogy， to the Third person of the Trinity. Yet it was found， or it was thought， necessary， by the victorious adversaries of Arianism， to explain the ambiguous language of some respectable doctors； to confirm the faith of the Catholics； and to condemn an unpopular and inconsistent sect of Macedonians； who freely admitted that the Son was consubstantial to the Father， while they were fearful of seeming to acknowledge the existence of Three Gods， A final and unanimous sentence was pronounced to ratify the equal Deity of the Holy Ghost： the mysterious doctrine has been received by all the nations， and all the churches of the Christian world； and their grateful reverence has assigned to the bishops of Theodosius the second rank among the general councils. Their knowledge of religious truth may have been preserved by tradition， or it may have been communicated by inspiration； but the sober evidence of history will not allow much weight to the personal authority of the Fathers of Constantinople. In an age when the ecclesiastics had scandalously degenerated from the model of apostolic purity， the most worthless and corrupt were always the most eager to frequent， and disturb， the episcopal assemblies. The conflict and fermentation of so many opposite interests and tempers inflamed the passions of the bishops： and their ruling passions were， the love of gold， and the love of dispute. Many of the same prelates who now applauded the orthodox piety of Theodosius， had repeatedly changed， with prudent fiexibility， their creeds and opinions； and in the various revolutions of the church and state， the religion of their so Vereign was the rule of their obsequious faith. When the emperor suspended his prevailing influence， the turbulent synod was blindly impelled by the absurd or selfish motives of pride： hatred， or resentment. The death of Meletius， which happened at the council of Constantinople， presented the most favorable opportunity of terminating the schism of Antioch， by suffering his aged rival， Paulinus， peaceably to end his days in the episcopal chair. The faith and virtues of Paulinus were unblemished. But his cause was supported by the Western churches； and the bishops of the synod resolved to perpetuate the mischiefs of discord， by the hasty ordination of a perjured candidate， rather than to betray the imagined dignity of the East， which had been illustrated by the birth and death of the Son of God. Such unjust and disorderly proceedings forced the gravest members of the assembly to dissent and to secede； and the clamorous majority which remained masters of the field of battle， could be compared only to wasps or magpies， to a flight of cranes， or to a flock of geese.
　　……

CHAPTER 26 Civil Wars， Reign of Theodosius
CHAPTER 27 Civil Wars， Reign of Theodosius
CHAPTER 28 Destruction of Paganism
CHAPTER 29 Division of Roman Empire between Sons of Theodosius
CHAPTER 30 Revolt of the Goths
CHAPTER 31 Invasion of Italy， Occupation of Territories by Barbarians
CHAPTER 32 Emperors Arcadius， Eutropius Theodosius II
CHAPTER 33 Conquest of Africa by the Vandals
CHAPTER 34 Attila
CHAPTER 35 Invasion by Attila
CHAPTER 36 Total Extinction of the Western Empire
CHAPTER 37 Conversion of the Barbarians to Christianity
CHAPTER 38 Reign of Clovis