“No Canadian government, whatever political party, will attempt to hinder the extension of the true principle of free trade all over the world”

Remarks on the Republican platform (1860)

1790s, First Principles of Government (1795)

On Import Duties (25 April 1843). Compare: "It is a condition which confronts us, not a theory" (Grover Cleveland, Annual Message, 1887, in reference to the tariff); "Protection is not a principle but an expedient" (below).
1840s

Source: Losing Confidence - Power, politics, And The Crisis In Canadian Democracy (2009), Chapter 5, Police State?, p. 124

2000s, Where the Right Went Wrong (2004)

Source: "Foundations of the Theory of Organization," 1948, p. 25

July 1, 1960. From the Canadian Bill of Rights.

Speech to the Virginia Convention (1861)
Context: These are pregnant statements; they avow a sentiment, a political principle of action, a sentiment of hatred to slavery as extreme as hatred can exist. The political principle here avowed is, that his action against slavery is not to be restrained by the Constitution of the United States, as interpreted by the Supreme Court of the United States. I say, if you can find any degree of hatred greater than that, I should like to see it. This is the sentiment of the chosen leader of the Black Republican party; and can you doubt that it is not entertained by every solitary member of that same party? You cannot, I think. He is a representative man; his sentiments are the sentiments of his party; his principles of political action are the principles of political action of his party. I say, then; it is true, at least, that the Republican party of the North hates slavery.

Source: Sociology For The South: Or The Failure Of A Free Society (1854), p. 61