QUOTE : Use-values exist in the physical material world of things that can be described in Newtonian and Cartesian terms of absolute space and time. Exchange-values lie in the relative space-time of motion and exchange of commodities, while values can be understood only in terms of the relational space-time of the world market. (The immaterial relational value of socially necessary labor times comes into being within the evolving space-time of capitalist global development.) But as Marx has already convincingly shown, values cannot exist without exchange-values, and exchange cannot exist without use-values. The three concepts are dialectically integrated with one another.