“The unity of blood and soil must be restored.”

2000s, 2001, First inaugural address (January 2001)
Context: America has never been united by blood or birth or soil. We are bound by ideals that move us beyond our backgrounds, lift us above our interests and teach us what it means to be citizens. Every child must be taught these principles. Every citizen must uphold them. And every immigrant, by embracing these ideals, makes our country more, not less, American. Today, we affirm a new commitment to live out our nation's promise through civility, courage, compassion, and character. America, at its best, matches a commitment to principle with a concern for civility. A civil society demands from each of us good will and respect, fair dealing and forgiveness. Some seem to believe that our politics can afford to be petty because, in a time of peace, the stakes of our debates appear small.

A tribute to those ANZACs who died in Gallipoli (1934), this is inscribed on the Atatürk Memorial in Turakena Bay, Gallipoli http://www.mch.govt.nz/emblems/monuments/ataturk.html and at the Kemal Atatürk Memorial, Canberra
Context: The heroes who shed their blood and lost their lives on this country's soil! You are in the soil of a friendly country now. Therefore rest in peace. You are side by side with the little Mehmets. The mothers who send their sons to the war! Wipe your tears away. Your sons are in our bosom, are in peace and will be sleeping in peace comfortably. From now on, they have became our sons since they have lost their lives on this land.

Heathcliff (Ch. XIV).
Source: Wuthering Heights (1847)
Context: You talk of her mind being unsettled - how the devil could it be otherwise, in her frightful isolation? And that insipid, paltry creature attending her from duty and humanity! From pity and charity. He might as well plant an oak in a flower-pot, and expect it to thrive, as imagine he can restore her to vigour in the soil of his shallow cares!

We must strive for unity at any price and with all sacrifices. But while we are uniting and organizing, we must rid ourselves of all foreign and antagonistic elements. What would one say of a general who in the enemy’s country sought to fill the ranks of his army with recruits from the ranks of the enemy? Would that not be the height of foolishness? Very well, to take into our army – which is an army for the class struggle and the class war – opponents, soldiers with aims and interests entirely opposite to our own, – that would be madness, that would be suicide.
No Compromise – No Political Trading (1899)

Revolution in Laos: Practice and Prospects (1981) (excerpts)

Though this had been cited as being from a letter objecting to the use of government land for churches in 1803 https://web.archive.org/web/20061123043628/http://www.positiveatheism.org///hist/quotes/madison.htm#PHONYMAD, as quoted in 2000 Years of Disbelief: Famous People With the Courage to Doubt (1996) edited by James A Haught, no original source for this has yet been found.
Misattributed

Rosa: The Death of a Composer

Address before the Indian Council of World Affairs, New Delhi, India, April 5, 1956, as quoted in Walter P Reuther: Selected Papers (1961), by Henry M. Christman, p. 133 If the peoples of great nations can work, sacrifice, fight, and die together because they share common fears and common hatreds in war, why can we not find a way to tap the great spiritual reservoir that lies deep within each of us and get people and nations working, sacrificing, and building together in peacetime because they share common hopes and common aspirations.

11 September 1813, ME 13:361
1810s, Letters to John Wayles Eppes (1813)
Context: The question will be asked and ought to be looked at, what is to be the resource if loans cannot be obtained? There is but one, "Carthago delenda est." Bank paper must be suppressed, and the circulating medium must be restored to the nation to whom it belongs. It is the only fund on which they can rely for loans; it is the only resource which can never fail them, and it is an abundant one for every necessary purpose. Treasury bills, bottomed on taxes, bearing or not bearing interest, as may be found necessary, thrown into circulation will take the place of so much gold and silver, which last, when crowded, will find an efflux into other countries, and thus keep the quantum of medium at its salutary level. Let banks continue if they please, but let them discount for cash alone or for treasury notes.