“Our civilization depends on peace among Western nations, and therefore on united strength, for Peace is a virgin who dare not show her face without Strength, her father, for protection. We can have peace and security only so long as we band together to preserve that most priceless possession, our inheritance of European blood, only so long as we guard ourselves against attack by foreign armies and dilution by foreign races.
We need peace to let our best men live to work out those more subtle, but equally dangerous, problems brought by this new environment in which we dwell, to give us time to turn this materialistic trend, to stop prostrating ourselves before this modern idol of mechanical efficiency, to find means of combining freedom, spirit, and beauty with industrial life — a peace which will bring character, strength, and security back to Western peoples.”

1910s, Address to Congress on War (1917)

Speech to the UN Economic and Social Council, Geneva, Switzerland (9 July 1965)
Context: We travel together, passengers on a little spaceship, dependent on its vulnerable reserves of air and soil; all committed, for our safety, to its security and peace; preserved from annihilation only by the care, the work and the love we give our fragile craft. We cannot maintain it half fortunate, half miserable, half confident, half despairing, half slave — to the ancient enemies of man — half free in a liberation of resources undreamed of until this day. No craft, no crew can travel safely with such vast contradictions. On their resolution depends the survival of us all.

Michael Jordan: ‘I can no longer stay silent’ http://theundefeated.com/features/michael-jordan-i-can-no-longer-stay-silent/, The Undefeated (July 25, 2016)

Quoted in "Pacific Affairs" - Page 51 - by University of British Columbia, Institute of Pacific Relations

1970s, Second Inaugural Address (1973)

2010s, Democracy Now! interview (2011)

Foreword http://www.bartleby.com/55/100.html
1910s, Theodore Roosevelt — An Autobiography (1913)
Context: It seems to me that, for the nation as for the individual, what is most important is to insist on the vital need of combining certain sets of qualities, which separately are common enough, and, alas, useless enough. Practical efficiency is common, and lofty idealism not uncommon; it is the combination which is necessary, and the combination is rare. Love of peace is common among weak, short-sighted, timid, and lazy persons; and on the other hand courage is found among many men of evil temper and bad character. Neither quality shall by itself avail. Justice among the nations of mankind, and the uplifting of humanity, can be brought about only by those strong and daring men who with wisdom love peace, but who love righteousness more than peace.

1860s, Our Composite Nationality (1869)

1930s, Address at San Diego Exposition (1935)
Context: This country seeks no conquest. We have no imperial designs. From day to day and year to year, we are establishing a more perfect assurance of peace with our neighbors. We rejoice especially in the prosperity, the stability and the independence of all of the American Republics. We not only earnestly desire peace, but we are moved by a stern determination to avoid those perils that will endanger our peace with the world.