Greed

Greed (or self-interest) is a natural and important human trait in achieving our goals
and an essential aspect of the free market. Milton Friedman explains in this great video clip
why greed is important in improving the overall wellfare for society.

Have a look:

#2 Keynes vs. Hayek - Song

The battle between Keynsians and Austrians continues ... in the following music video:

Keynes vs. Hayek – Rap song

In the early and mid-20th century, John Maynard Keynes’ economic theory was the predominant school of thought to explain economic behavior. Advocating government interventions and financial stimuli in order to avoid economic downturn, Keynesianism became very popular by politicians and many economists. While Hayek and his concepts were nearly forgotten in this time, Austrian School economics became more visible through the prudent economic policy of politicians such as Margret Thatcher in the UK and Ronald Reagan in America (who was influenced by Milton Friedman).

The following rap song is dealing with the struggle of both economists and the success of their theories: