Rokeach famously wrote: “A value is a standard... It is a standard that guides and determines action, attitudes toward objects and situations, ideology, presentations of self to others, evaluations, judgments, justifications, comparisons of self with others, and attempts to influence others.”
The genius move? He realized that conflict isn't between "good" and "bad" values. The real drama happens between two good terminal values.
Every individual possesses a relatively small number of total values.
Do you have any specific questions or aspects you'd like me to expand on?