In
this way #landed #property, like #capital, constitutes a promissory note to
#unpaid #labour, #gratis labour. [#Marx, MECW 31: 276]

"The great principle underlying the present #system is #unpaid #labor. Those who amass fortunes, build palaces, and live in luxury, are doing that by virtue of unpaid labor. Being directly or indirectly the possessors of land and machinery, they #dictate their terms to the workingman. He is compelled to sell his labor cheap, or to starve. The #price paid him is always far below the real value. He acts under compulsion, and they call it a free contract."

— Michael Schwab

https://en.wikipedia.org/wiki/Michael_Schwab