"And says John Wyse:
— Full many a flower is born to blush unseen.
And says Lenehan that knows a bit of the lingo:
— Conspuez les Anglais! Perfide Albion!" (U12.1206)
From Elegy Written in a Country Churchyard, by Thomas Gray. The lines comes as:
'Full many a gem of purest ray serene
The dark unfathom'd caves of ocean bear:
Full many a flower is born to blush unseen,
And waste its sweetness on the desert air.'