Which preposition to use with generalises

about Occurrences 1%

Could you take men by the thousand billion, you could generalise about them as you do about atoms; could you take atoms singly, it may be you would find them as individual as your aunts and cousins.

from Occurrences 1%

Foreign soldiers of talent and experience generalise from this as follows: Let them but have the direction of the naval as well as of the military part of an expedition, and the invasion of England must be successful.

with Occurrences 1%

But he generalised with much ease and perspicuity, and conducted the thread of his discourse, like a rivulet of light, through the histories of the year; transporting the mind of his audience from doings in Japan to those in America, from Poland to Mexico, and through stirring regions of Geography, Politics, Philanthropy, Social Science and Economy, by gentle and interesting transitions.

Which preposition to use with  generalises