Mill, J.S., Considerations on Representative Government, in Robson ed., The Collected Works of John Stuart Mill,  Toronto: University of Toronto Press, 1963-.

It seems to me, however, from various indications, and from none more than the recent debates on Reform of Parliament, that both Conservatives and Liberals (if I may continue to call them what they still call themselves) have lost confidence in the political creeds which they nominally profess, while neither side appears to have made any progress in providing itself with a better. Yet such a better doctrine must be possible; not a mere compromise, by splitting the difference between the two, but something wider than either, which, in virtue of its superior comprehensiveness, might be adopted by either Liberal or Conservative without renouncing anything which he really feels to be valuable in his own creed. When so many feel obscurely the want of such a doctrine, and so few even flatter themselves that they have attained it, any one may without presumption offer what his own thoughts, and the best that he knows of those of others, are able to contribute towards its formation.

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