Montesquieu

Carthage had a sin­gu­lar law of nations : it had all forei­gners who traf­fi­cked in Sardinia and near the Pillars of Hercules drow­ned.1 Its poli­ti­cal law was not less extra­or­di­nary : it for­bade Sardinians to culti­vate the soil, on pain of death.

Eratosthenes, in Strabo, book XVII, p. 802.