John Milton - Paradise Lost

What though the field be lost? [ 105 ]
All is not lost; the unconquerable Will,
And study of revenge, immortal hate,
And courage never to submit or yield:
And what is else not to be overcome?
That Glory never shall his wrath or might [ 110 ]
Extort from me. To bow and sue for grace
With suppliant knee, and deifie his power,
Who from the terrour of this Arm so late
Doubted his Empire, that were low indeed,
That were an ignominy and shame beneath [ 115 ]
This downfall;since by Fate the strength of Gods
And this Empyreal substance cannot fail,
Since through experience of this great event
In Arms not worse, in foresight much advanc't,
We may with more successful hope resolve [ 120 ]
To wage by force or guile eternal Warr
Irreconcileable, to our grand Foe,
Who now triumphs, and in th' excess of joy
Sole reigning holds the Tyranny of Heav'n. 

for the mind and spirit remains
Invincible, and vigour soon returns, [ 140 ]
Though all our Glory extinct, and happy state
Here swallow'd up in endless misery.