The paper begins by emphasizing the fact that, on a historical scale, one can have several views of the relationship that has existed over time between ethics and capitalism, namely: missionary, ‘Nietzschean’, critical, and ‘regulatory’. It is argued that, nowadays, the capitalization of the contributions supplied, over time, by the four views embraces the form of two modern diametrically opposed perspectives, i.e.: on the one hand, there is the interpretation given by the neo-classical school of thought (mainstream economics) and, on the other hand, it comes to the interpretation given by the Austrian praxeological economic school (libertarian economics). The emphasis of the analysis is put on the assertions developed by the last one...