Positive economics is in principle independent of any particular ethical position or normative judgment...In short, positive economics is or can be an "objective" science.
Milton FriedmanAdam Smith's key insight was that both parties to an exchange can benefit and that, so long as cooperation is strictly voluntary, no exchange can take place unless both parties do benefit.
Milton FriedmanPeople hired by government know who is their benefactor. People who lose their jobs or fail to get them because of the government program do not know that that is the source of their problem. The good effects are visible. The bad effects are invisible. The good effects generate votes. The bad effects generate discontent, which is as likely to be directed at private business as at the government.
Milton Friedman