A value judgment is the outcome of mental acts of an individual, which cannot be observed but which express his wants, tastes, desires, feelings, choices or preferences which incite or impel him to act in a certain manner at a given time, situation and environment in an attempt to substitute conditions he prefers for those he considers less satisfactory. A judgment of value is personal and subjective and thus not open to proof or disproof. It can only be identified by an action from which it is inferred.
- Percy L. Greaves, Jr. "Mises Made Easier ", 1974. Referenced 2014-06-28.