On a matter of even wider import for Imperial statesmanship his sympathies were at once and clearly declared. From this his first entry into the arena of public debate he was the champion of the dark-skinned peoples-- all the more, perhaps, because he recognized clearly that the Anglo-Saxons were "the only extirpating race." In lands where white men could rear their children it seemed to him inevitable that the Anglo-Saxon race should replace the coloured peoples as, to take his own illustration, the English fly was superseding all other flies in New Zealand. Yet at least while the American-Indians or the Maoris remained, he was determined to secure justice for them; and he incurred angry criticism for outspoken condemnation of English dealing with the natives in Tasmania. But a great part of his book is devoted to discussion of questions which must be of constant recurrence, affecting the relations of Englishmen to natives in lands where the English are only a governing handful. These matters received special comment in a letter from John Stuart Mill at Avignon on February 9th, 1869. Mill, although a stranger to Dilke, was moved to write his commendation in the most ungrudging terms: "It is long" (he said) "since any book connected with practical politics has been published on which I build such high hopes of the future usefulness and distinction of the writer, showing, as it does, that he not only possesses a most unusual amount of real knowledge on many of the principal questions of the future, but a mind strongly predisposed to what are (at least in my opinion) the most advanced and enlightened views of them.