What kind of society isn’t structured on greed?... So the problem of social organization is how to set up an arrangement under which greed will do th… - Milton Friedman

The problem of social organization is how to set up an arrangement under which greed will do the least harm; capitalism is that kind of a system.

Fundamentally, there are only two ways of coordinating the economic activities of millions. One is central direction involving the use of coercion—the technique of the army and of the modern totalitarian state. The other is voluntary co-operation of individuals—the technique of the market place.

What country in the world today engages in the most extreme anti-Semitic persecution? The Soviet Union. It’s not an accident, because if you have a society with concentrated power, if you have a collectivist society, it’s going to be in a position to exercise the preferences and prejudices of its rulers. Moreover, it’s going to have an incentive to do so, because it’s going to need a scapegoat and it will choose some group like the Jews or the blacks to be the scapegoat.

The existence of a free market does not of course eliminate the need for government. On the contrary, government is essential both as a forum for determining the 'rule of the game' and as an umpire to interpret and enforce the rules decided on.