An Englishman Looks at the World by H.G. Wells

What will hold such an Empire as the British together, this great, laxly scattered, sea-linked association of ancient states and new-formed countries, Oriental nations, and continental colonies? What will enable it to resist the endless internal strains, the inevitable external pressures and attacks to which it must be subjected This is the primary question for British Imperialism; everything else is secondary or subordinated to that.

There is a multitude of answers. But I suppose most of them will prove under examination either to be, or to lead to, or to imply very distinctly this generalisation that if most of the intelligent and active people in the Empire want it to continue it will, and that if a large proportion of such active and intelligent people are discontented and estranged, nothing can save it from disintegration. I do not suppose that a navy ten times larger than ours, or conscription of the most irksome thoroughness, could oblige Canada to remain in the Empire if the general will and feeling of Canada were against it, or coerce India into a sustained submission if India presented a united and resistant front. Our Empire, for all its roll of battles, was not created by force; colonisation and diplomacy have played a far larger share in its growth than conquest; and there is no such strength in its sovereignty as the rule of pride and pressure demand.