In Candide, how does Voltaire show that greed is one of the main causes of evil in the world?

's
commentary on greed mostly arises from the "El Dorado" section
of  . The streets of El Dorado are littered with precious gems and stones.
Candide and Cacambo are surprised to learn that the citizens of El Dorado are not impressed with
those valuable stones and treat them as though they are just rocks in the street. A wise old man
who lives in El Dorado but who, unlike its other citizens, has experienced the outside world,
tells Candide and Cacambo, "as we are surrounded by inaccessible mountains and precipices,
we have so far been protected against the rapacity of the European states, with their irrational
lust for the pebbles and mud of our land, for whose sake they would kill every last one of
us" (46). This is the most blatant condemnation of European greed. The old man fears that
if Europeans were able to get into El Dorado (and we know they have tried to find this legendary
"city of gold"), they would murder the citizens for the sake of taking their
treasures....