Yes, capitalism is more efficient than socialism, but to build a compelling argument for free market capitalism, defenders of liberty must also articulate that it is a superior moral system.
Human action cannot be analyzed in the same way that one would analyze objects. These quantitative methods do not improve our knowledge of the driving causes in economics.
If you say to someone that he won’t get what he is aiming for by using the means he has chosen, you aren’t making a value judgment yourself. You are making a strictly scientific statement.
Interpersonal utility can't be measured. After all, if you can't measure a single person's utility, it makes no sense at all to measure one person's utility against that of another.
Government planners have embraced a materialistic view of human beings which cheapens the importance of family and social events. These "experts" fail to understand what being human really means.
If people want to dismiss this school of thought, which many seem inclined to do for political (not theoretical) reasons, at least they should do so based on facts and knowledge, not on falsehoods.
It makes sense that individual ethics can vary within a natural law framework: the nonaggression principle isn't so much a rule to be applied as a norm to be followed. It's the foundation that makes life among other people possible.
