There are no more new worlds. The unoccupied arable lands of the earth are limited, and will soon be taken. The time is coming when the pressure of population on the means of subsistence will be felt here as it is now felt in Europe and Asia. Long before the thousand millions are here, the mighty centrifugal tendency, inherent in this stock and strengthened in the United States, will assert itself. If I read not amiss, this powerful race will move down upon Mexico, down upon Central and South America, out upon the islands of the sea, over upon Africa and beyond.
Nothing can save the inferior race but a ready and pliant assimilation.
Whether the feebler and more abject races are going to be regenerated and raised up, is already, very much of a question.