Editing Celts (section)

===Historical evidence===
[[File:Herodotus world map-en.svg|thumb|The world according to [[Herodotus]]]]
The Greek historian [[Ephorus]] of Cyme in [[Asia Minor]], writing in the 4th century BC, believed the Celts came from the islands off the mouth of the [[Rhine]] and were "driven from their homes by the frequency of wars and the violent rising of the sea". [[Polybius]] published a [[history of Rome]] about 150 BC in which he describes the Gauls of Italy and their conflict with Rome. [[Pausanias (geographer)|Pausanias]] in the 2nd century AD says that the Gauls "originally called Celts", "live on the remotest region of Europe on the coast of an enormous tidal sea". [[Posidonius]] described the southern Gauls about 100 BC. Though his original work is lost, later writers such as [[Strabo]] used it. The latter, writing in the early 1st century AD, deals with Britain and Gaul as well as Hispania, Italy, and Galatia. [[Julius Caesar|Caesar]] wrote extensively about his [[Commentarii de Bello Gallico|Gallic Wars]] in 58–51 BC. [[Diodorus Siculus]] wrote about the Celts of Gaul and Britain in his 1st-century history.{{Citation needed|date=April 2022}}

[[Diodorus Siculus]] and [[Strabo]] both suggest that the heartland of the people they call Celts was in [[Southern France|southern Gaul]]. The former says that the Gauls were to the north of the Celts, but that the Romans referred to both as Gauls (linguistically the Gauls were certainly Celts). Before the discoveries at Hallstatt and La Tène, it was generally considered that the Celtic heartland was southern Gaul, see [[Encyclopædia Britannica]] for 1813.{{Citation needed|date=April 2022}}