“I have taken office with two objects; to see whether something cannot be done to bring the self-governing Colonies and ourselves into closer relations, and to attempt the development of the resources of the Crown Colonies, especially to increase our trade with those Colonies.”

Quoted in Money and Men by Robert McCann Rice (1941) but no prior source is extant.
Misattributed

A Summary View of the Rights of British America http://alexpeak.com/twr/jefferson/#1784 (July 1774)
1770s
Context: For the most trifling reasons, and sometimes for no conceivable reason at all, his majesty has rejected laws of the most salutary tendency. The abolition of domestic slavery is the great object of desire in those colonies where it was unhappily introduced in their infant state. But previous to the infranchisement of the slaves we have, it is necessary to exclude all further importations from Africa. Yet our repeated attempts to effect this by prohibitions, and by imposing duties which might amount to a prohibition, have been hitherto defeated by his majesty’s negative: thus preferring the immediate advantages of a few British corsairs to the lasting interests of the American states, and to the rights of human nature deeply wounded by this infamous practice.

Source: From Blood in My Eye (1971), p. 24

1961, UN speech
Context: I do not ignore the remaining problems of traditional colonialism which still confront this body. Those problems will be solved, with patience, good will, and determination. Within the limits of our responsibility in such matters, my Country intends to be a participant and not merely an observer, in the peaceful, expeditious movement of nations from the status of colonies to the partnership of equals. That continuing tide of self-determination, which runs so strong, has our sympathy and our support. But colonialism in its harshest forms is not only the exploitation of new nations by old, of dark skins by light, or the subjugation of the poor by the rich. My Nation was once a colony, and we know what colonialism means; the exploitation and subjugation of the weak by the powerful, of the many by the few, of the governed who have given no consent to be governed, whatever their continent, their class, their color.

Source: The Globalization of Poverty and the New World Order - Second Edition - (2003), Chapter 19, Structural Adjustment in the Developed Countries, p. 303

America (The Book): A Citizen's Guide to Democracy Inaction (2004)

The Philosophy of Paine (1925)
Context: Looking back to those times we cannot, without much reading, clearly gauge the sentiment of the Colonies. Perhaps the larger number of responsible men still hoped for peace with England. They did not even venture to express the matter that way. Few men, indeed, had thought in terms of war.
Then Paine wrote 'Common Sense,' an anonymous tract which immediately stirred the fires of liberty. It flashed from hand to hand throughout the Colonies. One copy reached the New York Assembly, in session at Albany, and a night meeting was voted to answer this unknown writer with his clarion call to liberty. The Assembly met, but could find no suitable answer. Tom Paine had inscribed a document which never has been answered adversely, and never can be, so long as man esteems his priceless possession.
In 'Common Sense' Paine flared forth with a document so powerful that the Revolution became inevitable. Washington recognized the difference, and in his calm way said that matters never could be the same again.. It must be remembered that 'Common Sense' preceded the declaration and affirmed the very principles that went into the national doctrine of liberty. But that affirmation was made with more vigor, more of the fire of the patriot and was exactly suited to the hour. It is probable that we should have had the Revolution without Tom Paine. Certainly it could not be forestalled, once he had spoken.

Nonfiction, Dave Barry Hits Below the Beltway (2001)

Cuba as Vanguard (1961)
Context: We, politely referred to as "underdeveloped," in truth are colonial, semi-colonial or dependent countries. We are countries whose economies have been distorted by imperialism, which has abnormally developed those branches of industry or agriculture needed to complement its complex economy. “Underdevelopment,” or distorted development, brings a dangerous specialization in raw materials, inherent in which is the threat of hunger for all our peoples. We, the “underdeveloped,” are also those with the single crop, the single product, the single market. A single product whose uncertain sale depends on a single market imposing and fixing conditions. That is the great formula for imperialist economic domination.