It is time for opposition to the Annexation of Texas to cease.... Texas is now ours.... Let their reception into the "family" be frank, kindly, and cheerful (O)ther nations have undertaken ... hostile interference against us, ... h pering our power, limiting our greatness and checking the fulfillment of our manifest destiny to overspread the continent allotted by Providence (God) for the free development of our yearly multiplying millions.

California will, probably, next fall away from (Mexico).... Imbecile and distracted, Mexico never can exert any real governmental authority over such a country... The Anglo-Saxon foot is already on (California's) borders.... ?
armed with the plough and the rifle, and marking its trail with schools and colleges. courts and representative halls, mills and meeting-houses.... All this (will happen) in the natural flow of events...

What does O’Sullivan have to say about Mexico’s ability to govern?

O'Sullivan states that Mexico is "imbecile and distracted" and will never be able to exert any real governmental authority over California. He believes that the Anglo-Saxon foot is already on California's borders and that the natural flow of events will lead to the spread of American culture and values in the form of ploughs, rifles, schools, colleges, courts, representative halls, mills, and meeting-houses.