Das Philosophisch-Werden der Welt [ist] zugleich ein Weltlich-Werden der Philosophie; ihre Verwirklichung [ist] zugleich ihr Verlust. - Karl Marx

The individual produces an object and, by consuming it, returns to himself, but returns as a productive and self reproducing individual. Consumption thus appears as a moment of production.

In a higher phase of communist society, after the enslaving subordination of the individual to the division of labor, and therewith also the antithesis between mental and physical labor, has vanished; after labor has become not only a means of life but life's prime want; after the productive forces have also increased with the all-around development of the individual, and all the springs of co-operative wealth flow more abundantly — only then can the narrow horizon of bourgeois right be crossed in its entirety and society inscribe on its banners: From each according to his ability, to each according to his needs!

But capitalist production begets,with the inexorability of a law of Nature,its own negation. It is the negation of negation.