OF THE CAUSES OF IMPROVEMENT IN THE PRODUCTIVE POWERS OF LABOUR, AND OF THE ORDER ACCORDING TO WHICH ITS PRODUCE IS NATURALLY DISTRIBUTED AMONG THE DIFFERENT RANKS OF THE PEOPLE. xWHiIo5XTt+W7JRCrchQ3HGjw1tW+OgnICuzR5oLkP/DtcXJ1JYp9clME6IrVlX3