TO THE DEVELOPMENT OF THE BOURGEOISIE, THAT IS TO SAY OF CAPITAL, RESPONDS IN EQUAL PROPORTION THE DEVELOPMENT OF THE PROLETARIAT, OF THE CLASS OF MODERN WORKERS WHO LIVE ONLY AS LONG AS THEY FIND WORK, AND WHO FIND WORK ONLY AS LONG AS THEIR WORK INCREASES CAPITAL. THESE WORKERS, WHO ARE FORCED TO SELL THEMSELVES IN PIECES, ARE A COMMODITY LIKE ANY OTHER COMMERCIAL ITEM AND ARE THEREFORE EXPOSED IN THE SAME WAY TO ALL THE VICISSITUDES OF COMPETITION, TO ALL THE FLUCTUATIONS OF THE MARKET.