“There would be no import duties upon the supplies, machinery, etc., going from the States. The effect that would have been produced upon Cuban commerce, with these advantages to a rival, is observable at a glance. The Cuban question would have been settled long ago in favor of "free Cuba." Hundreds of American vessels would now be advantageously used in transporting the valuable woods and other products of the soil of the island to a market and in carrying supplies and emigrants to it. The island is but sparsely settled, while it has an area sufficient for the profitable employment of several millions of people.”

Source: (1776), Book IV, Chapter II

1870s, Eighth State of the Union Address (1876)

Source: The Natural Food for Man, p. 162

Gloria and Emilio Estefan's Statement Regarding her forthcoming CD "90 Millas" (March 28, 2007)
2007, 2008

2014, Statement on Cuban policy (December 2014)

On the Agriculture of England (1840)
Context: Is it practicable, on the soil and in the climate of Massachusetts, to pursue a succession of crops? I cannot question it; and I have entire confidence in the improvements to our husbandry, and the other great advantages, which would accrue from judicious rotation of products. The capacities of the soil of Massachusetts are undoubted. One hundred bushels of corn to an acre have been repeatedly produced, and other crops in like abundance. But this will not effect the proper ends of a judicious and profitable agriculture, unless we can so manage our husbandry that, by a judicious and proper succession of the crops, land will not only be restored after an exhausting crop, but gradually enriched by cultivation.

2014, Statement on Cuban policy (December 2014)
Context: While I have been prepared to take additional steps for some time, a major obstacle stood in our way –- the wrongful imprisonment, in Cuba, of a U. S. citizen and USAID sub-contractor Alan Gross for five years. Over many months, my administration has held discussions with the Cuban government about Alan’s case, and other aspects of our relationship. His Holiness Pope Francis issued a personal appeal to me, and to Cuba’s President Raul Castro, urging us to resolve Alan’s case, and to address Cuba’s interest in the release of three Cuban agents who have been jailed in the United States for over 15 years.
Today, Alan returned home –- reunited with his family at long last. Alan was released by the Cuban government on humanitarian grounds. Separately, in exchange for the three Cuban agents, Cuba today released one of the most important intelligence agents that the United States has ever had in Cuba, and who has been imprisoned for nearly two decades. This man, whose sacrifice has been known to only a few, provided America with the information that allowed us to arrest the network of Cuban agents that included the men transferred to Cuba today, as well as other spies in the United States. This man is now safely on our shores. 
Having recovered these two men who sacrificed for our country, I’m now taking steps to place the interests of the people of both countries at the heart of our policy.

Defending the film Life of Brian on BBC chat show Friday Night Saturday Morning (9 November 1979)

The People's Rights [1909] (London: Jonathan Cape, 1970), p. 46
Early career years (1898–1929)