“I believe that the Durbar, more than any event in modern history, showed to the Indian people the path which, under the guidance of Providence, they are treading, taught the Indian Empire its unity, and impressed the world with its moral as well as material force. It will not be forgotten. The sound of the trumpets has already died away; the captains and the kings have departed; but the effect produced by this overwhelmingly display of unity and patriotism is still alive and will not perish. Everywhere it is known that upon the throne of the East is seated a power that has made of the sentiments, the aspirations, and the interests of 300 millions of Asiatics a living thing, and the units in that great aggregation have learned that in their incorporation lies their strength. As a disinterested spectator of the Durbar remarked, Not until to-day did I realise that the destinies of the East still lie, as they always have done, in the hollow of India’s hand. I think, too, that the Durbar taught the lesson not only of power but of duty. There was not an officer of Government there present, there was not a Ruling Prince nor a thoughtful spectator, who must not at one moment or other have felt that participation in so great a conception carried with it responsibility as well as pride, and that he owed something in return for whatever of dignity or security or opportunity the Empire had given him.”

On Coalition Government (1945)

Harbans Mukhia, Obituary, The Indian Historical Review http://journals.sagepub.com/doi/abs/10.1177/037698360102800245

[He goes on to cite the example of Sir William Johnson's work with the Mohawks as Indian Superintendent, and to explain further what he means by "civilization"- in particular, encouraging the use of agriculture instead of hunting].
"A View of the Causes and Consequences of the American Revolution" (London, Robinson, 1797)

What is a Poem - Endword - Selected Poems (1926)

"The Achievement of the Cat"
The Square Egg (1924)
Context: The animal which the Egyptians worshipped as divine, which the Romans venerated as a symbol of liberty, which Europeans in the ignorant Middle Ages anathematised as an agent of demonology, has displayed to all ages two closely blended characteristics — courage and self-respect. No matter how unfavourable the circumstances, both qualities are always to the fore. Confront a child, a puppy, and a kitten with a sudden danger; the child will turn instinctively for assistance, the puppy will grovel in abject submission to the impending visitation, the kitten will brace its tiny body for a frantic resistance. And disassociate the luxury-loving cat from the atmosphere of social comfort in which it usually contrives to move, and observe it critically under the adverse conditions of civilisation — that civilisation which can impel a man to the degradation of clothing himself in tawdry ribald garments and capering mountebank dances in the streets for the earning of the few coins that keep him on the respectable, or non-criminal, side of society. The cat of the slums and alleys, starved, outcast, harried, still keeps amid the prowlings of its adversity the bold, free, panther-tread with which it paced of yore the temple courts of Thebes, still displays the self-reliant watchfulness which man has never taught it to lay aside.

January 1886, in a campaign speech given in New York https://www.history.com/news/teddy-roosevelt-race-imperialism-national-parks
1880s

Autobiographical sketch (1970), at Nobelprize.org http://nobelprize.org/nobel_prizes/literature/laureates/1970/solzhenitsyn-autobio.html

There is no record of this alleged statement made by Lord Curzon in the House of Commons. It is a forged quote by radical Islamist extremists like the Islamic Thinkers group, and Hizb ut-Tahrir members such as Khondakar Golam Mowla.
Misattributed

The Mitrokhin Archive