“ A civilized people have far other means of imparting civilization to those under their influence ”
 John Stuart Mill, Considerations on Representative Government (1861). copy citation

Context

“Hence even personal slavery, by giving a commencement to industrial life, and enforcing it as the exclusive occupation of the most numerous portion of the community, may accelerate the transition to a better freedom than that of fighting and rapine. It is almost needless to say that this excuse for slavery is only available in a very early state of society. A civilized people have far other means of imparting civilization to those under their influence; and slavery is, in all its details, so repugnant to that government of law, which is the foundation of all modern life, and so corrupting to the master-class when they have once come under civilized influences, that its adoption under any circumstances whatever in modern society is a relapse into worse than barbarism.” source