The genesis and growth of possession gradually forcing people to labor for their support, they agreed either formally or tacitly,--it makes no difference which,--that the laborer should be sole proprietor of the fruit of his labor; that is, they simply declared the fact that thereafter none could live without working.

It necessarily followed that, to obtain equality of products, there must be equality of labor; and that, to obtain equality of labor, there must be equality of facilities for labor.

Whoever without labor got possession, by force or by strategy, of another's means of subsistence, destroyed equality, and placed himself above or outside of the law.

Whoever monopolized the means of production on the ground of greater industry, also destroyed equality.

Equality being then the expression of right, whoever violated it was UNJUST.
Thus, labor gives birth to private possession; the right in a thing--jus in re.