English summary: This anthology of excerpts of classical texts presents Greek and Roman perceptions of the Other. Over 150 texts offer observations on political rights, citizenship, racist remarks, mixed marriages, and strange customs. Through these emerge the multiple facets of the ancient cosmopolitan world. French description: Les Grecs et les Romains, dont les chemins se sont tres tot croises, ont aussi rencontre bien d'autres peuples sur lesquels...