First I shall indicate the causes of the above war between <a class="linkToPlace" target="_blank" href="/place?placename=Rome&groupId=935&placeId=1669">Rome</a> and <a class="linkToPlace" target="_blank" href="/place?placename=Carthage&groupId=441&placeId=820">Carthage</a>, known as the Hannibalic war, and tell how the Carthaginians invaded <a class="linkToPlace" target="_blank" href="/place?placename=Italy&groupId=656&placeId=1199">Italy</a>,
broke up the dominion of <a class="linkToPlace" target="_blank" href="/place?placename=Rome&groupId=935&placeId=1669">Rome</a>, and cast the Romans into great fear for their safety and even for their native soil, while great was their own hope, such as they had never dared to entertain, of capturing <a class="linkToPlace" target="_blank" href="/place?placename=Rome&groupId=935&placeId=1669">Rome</a> itself.
Next I shall attempt to describe how at the same period Philip of Macedon, after finishing his war with the Aetolians and settling the affairs of Greece, conceived the project of an alliance with <a class="linkToPlace" target="_blank" href="/place?placename=Carthage&groupId=441&placeId=820">Carthage</a>;
how Antiochus and Ptolemy Philopator first quarrelled and at length went to war with each other for the possession of <a class="linkToPlace" target="_blank" href="/place?placename=Coele-Syria&groupId=484&placeId=908">Coele-Syria</a>,
and how the Rhodians and Prusias, declaring war on the Byzantines, compelled them to stop levying toll on ships bound for the Euxine.
Interrupting my narrative at this point, I shall draw up my account of the Roman Constitution, as a sequel to which I shall point out how the peculiar qualities of the Constitution conduced very largely not only to their subjection of the Italians and Sicilians, and subsequently of the Spaniards and Celts, but finally to their victory over <a class="linkToPlace" target="_blank" href="/place?placename=Carthage&groupId=441&placeId=820">Carthage</a> and their conceiving the project of universal empire.
Simultaneously in a digression I shall narrate how the dominion of Hiero of <a class="linkToPlace" target="_blank" href="/place?placename=Syracuse&groupId=994&placeId=1753">Syracuse</a> fell
and after this I shall deal with the troubles in <a class="linkToPlace" target="_blank" href="/place?placename=Egypt&groupId=556&placeId=368">Egypt</a>, and tell how, on the death of Ptolemy, Antiochus and Philip, conspiring to partition the dominions of his son, a helpless infant, began to be guilty of acts of unjust aggression, Philip laying hands on the islands of the Aegean, and on Caria and <a class="linkToPlace" target="_blank" href="/place?placename=Samos&groupId=944&placeId=1680">Samos</a>, while Antiochus seized on <a class="linkToPlace" target="_blank" href="/place?placename=Coele-Syria&groupId=484&placeId=908">Coele-Syria</a> and <a class="linkToPlace" target="_blank" href="/place?placename=Phoenicia&groupId=894&placeId=464">Phoenicia</a>.
Walbank Commentary