From the monologue in Dusinane (Act5, scene 5)

In all my dreams before my helpless sight
He plunges at me, guttering, choking, drowning.

If in some smothering dreams you too could pace
Behind the wagon that we flung him in,
And watch the white eyes writhing in his face,
His hanging face, like a devil's sick of sin,
If you could hear, at every jolt, the blood
Come gargling from the froth-corrupted lungs,
Bitter as the cud
Of vile, incurable sores on innocent tongues,—
My friend, you would not tell with such high zest
To children ardent for some desperate glory,
The old Lie: Dulce et decorum est
Pro patria mori.

When you are old and grey and full of sleep, 

And nodding by the fire, take down this book, 

And slowly read, and dream of the soft look 

Your eyes had once, and of their shadows deep; 

How many loved your moments of glad grace, 

And loved your beauty with love false or true, 

But one man loved the pilgrim soul in you, 

And loved the sorrows of your changing face; 

And bending down beside the glowing bars, 

Murmur, a little sadly, how Love fled 

And paced upon the mountains overhead 

And hid his face amid a crowd of stars.