“The romantic notions of chivalry appear to have lost their vigour towards the conclusion of the fifteenth century, especially in this country, where a continued series of intestine commotions employed the exertions of every man of property, and real battles afforded but little leisure to exercise the mockery of war.”
pg. xxviii
The Sports and Pastimes of the People of England (1801), Chivalry
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Joseph Strutt 65
British engraver, artist, antiquary and writer 1749–1802Related quotes

1910s, Citizenship in a Republic (1910)

“In the lost battle,
Borne down by the flying,
Where mingles war's rattle
With groans of the dying.”
Canto III, stanza 11.
Marmion (1808)

Speech https://www.youtube.com/watch?v=0pfEJaI2iS4 (7 February 2011)
2010s

“France has lost a battle, but France has not lost the war.”
La France a perdu une bataille, mais la France n'a pas perdu la guerre.
Poster À tous les Français (To All Frenchmen), August 1940.
À tous les Français was designed and displayed in London to accompany the Appel du 18 juin (Appeal of 18 June) following defeat at the Battle of France. The pair are considered to be the founding texts of the Résistance.
World War II

Don Tarquinio (1905; repr. London: Chatto and Windus, 1941), Prologue, p. x

Very often attributed to Addison, this is apparently a paraphrase of a statement by Hugh Blair, published in Blair's Sermons (1815), Vol. 1, p. 219, where he mentions "men of pleasure and the men of business", and that "To the former every moment appears to be lost, which partakes not of the vivacity of amusement".
Misattributed

Book XXXIV, sec. 12 http://books.google.com/books?id=5f08AAAAYAAJ&q="For+he+considered+that+in+many+cases+but+especially+in+war+mere+appearances+have+had+all+the+effect+of+realities+and+that+a+person+under+a+firm+persuasion+that+he+can+command+resources+virtually+has+them+that+very+prospect+inspiring+him+with+hope+and+boldness+in+his+exertions"&pg=PA443#v=onepage
History of Rome

“Their exercises are unbloody battles, and their battles bloody exercises.”
Book 3.5.1, trans. William Whiston
The Jewish War (c. 75 CE)