According to Mark Twain what were the US real intentions in the Philippines?

Twain was against Imperialism and the brutal conquest of other nations "for their own good" and to add them to the American Empire. Of the conquest of the Phillipines and the bloody slaughters done by the USA he wrote his book "In The Conquest of the Philippines" describing the massacre of 600 to 900 Moros (a Philippine tribe) by American troops standing at the rim of an extinct volcano where the tribe was hiding and shooting down on them. Although the president called this a "brilliant feat of arms." Twain had this to say:

The enemy numbered 600 - including women and children - and we abolished them utterly, leaving not even a baby alive to cry for its dead mother. This is incomparably the greatest victory that was ever achieved by the Christian soldiers of the United States.