This good, and this evil, both therefore pass on, to become absorbed in the general destinies of humanity.
How does this come about?
I will try to make it understood by some examples.
Let us go back to the thirteenth century.

Men who gave themselves up to the business of copying, received for this service _a remuneration regulated by the general rate of profits_.

Among them is found one, who seeks and finds the means of multiplying rapidly copies of the same work.

He invents printing.

The first effect of this is, that the individual is enriched, while many more are impoverished.