San Domingo, with a stable government, under which her immense resources can be developed, will give remunerative wages to tens of thousands of laborers not now upon the island. This labor will take advantage of every available means of transportation to abandon the adjacent islands and seek the blessings of freedom and its sequence—each inhabitant receiving the reward of his own labor. Porto Rico and Cuba will have to abolish slavery, as a measure of self-preservation, to retain their laborers.

Second State of the Union Address (1870)