Juvenal, Satires 10.1-4
omnibus in terris, quae sunt a Gadibus usque
Auroram et Gangen, pauci dinoscere possunt
vera bona atque illis multum diversa, remota
In all the lands from Gades to Aurora and the Ganges, few people are able to put aside the mists of error and distinguish true good things from their complete opposites.