“The real difficulty of the situation lies in the practical working of the coercion. Let it be laid down that the League as a whole will take the necessary action, economic or military. Well and good; but the League is not a military or economic unit and possesses no central executive. It is a society of independent sovereign states, their independence somewhat modified by treaty obligations and a habit of regular conference, but none the less real. I doubt whether the League as a League could declare war or wage war. The force would have to be supplied by each state separately, of its own deliberate will. ... One cannot expect Siam or Canada to mobilize because one Balkan state attacks another. And if the duty is not incumbent on all members, who is to decide what members are to undertake it? The Council has no absolute authority. No nation will be eager to subject itself to the strain and sacrifice of coercive action unless its own interests are sharply involved. But the question is whether, in a world that increasingly detests war and mistrusts force as a instrument of international policy, the various national Parliaments or Governments will in general have sufficient loyalty to the League, sufficient public spirit and sense of reality, to be ready to face the prospects of war not in defence of their own frontiers or immediate national interests, but simply to maintain the peace of the world.”

As quoted in "D.C. Money Will Talk" by Bob Addie, in The Washington Post (Wednesday, October 11, 1972), p. D4
Baseball-related, <big><big>1970s</big></big>, <big>1972</big>

That is the key to our whole action and to our every motive.
Speech to the Peace Society (31 October 1935), quoted in This Torch of Freedom (1935), pp. 336-337.
1935

An American Peace Policy (1925)

St. 1
The Charge of the Light Brigade (1854)
Context: Half a league half a league
Half a league onward
All in the valley of Death
Rode the six hundred:
'Forward the Light Brigade
Charge for the guns' he said
Into the valley of Death
Rode the six hundred.

Last speech before the League of Nations (8 April 1946)

http://news.bbc.co.uk/sport1/hi/football/eng_prem/8888167.stm

The Choice
Context: Nay, come up hither. From this wave-wash'd mound
Unto the furthest flood-brim look with me;
Then reach on with thy thought till it be drown'd.
Miles and miles distant though the last line be,
And though thy soul sail leagues and leagues beyond,—
Still, leagues beyond those leagues, there is more sea.

2010s, "Heaven is Helping Us": More from the Nationalist Left (August 2018)
Context: To assume that the two Korean administrations do not already see each other as confederates, and behave accordingly, albeit discreetly, is like assuming that a man and woman planning a marriage are not yet having sex. When we ask for Moon’s help in getting the other half of the peninsula to denuclearize, we are in effect asking this fervent nationalist to help remove the future guarantor of a unified Korea’s security and autonomy. Why should he comply? The only remaining point of the US-ROK alliance is to ease the transition to a confederation — which would obviate that alliance altogether. The recent news of South Korean violations of sanctions (and of a presidential award just given to the main importer of North Korean coal) is merely illustrative. It’s trivial in comparison to the basic truth staring us in the face: No true liberal-democratic ally of the United States would think of leaguing up with an anti-American dictatorship, let alone one still in the thrall of a personality cult.

Address to the League of Nations (1936)