The Wealth of Nations by Part 4 Chapter 7 Page 98

Under the republic no magistrate could have had authority enough to protect the slave, much less to punish the master.

The stock, it is to be observed, which has improved the sugar colonies of France, particularly the great colony of St. Domingo, has been raised almost entirely from the gradual improvement and cultivation of those colonies. It has been almost altogether the produce of the soil and of the industry of the colonies, or, what comes to the same thing, the price of that produce gradually accumulated by good management, and employed in raising a still greater produce. But the stock which has improved and cultivated the sugar colonies of England has, a great part of it, been sent out from England, and has by no means been altogether the produce of the soil and industry of the colonists.