The idle lives of a minority ruling class can only be maintained by products, needless to say. So the only method to bring about this state of affair… - Itsurō Sakisaka

In the case of the exploitation of slave labor, by contrast, things are exceedingly clear. Slaves, who exist as a sort of animal owned by another human being, have no freedom. Like a dog, a slave is unable to exercise any degree of physical or mental freedom.

A newspaper article - I can't recall the exact year - listed the capitalist Kōsuke Matsushita as the person in Japan with the largest income. I don't know anything about Mr. Matsushita personally, and just happened to see this article, but here I would like to use his case to illustrate exploitation. This example, incidentally, will assume that products and labor-power are sold at their value.

Since the labor-power could be the labor of four, eight, or even twelve hours, the amount of labor expended can be augmented. The value of the labor-power is decided by the consumption goods necessary to maintain the life of the worker, making it possible for that person to exist as a human being who expends the same labor today as yesterday.