Yeats, from Easter 1916:

We know their dream; enough
To know they dreamed and are dead;
And what if excess of love
Bewildered them till they died?
I write it out in a verse -
MacDonagh and MacBride
And Connolly and Pearse
Now and in time to be,
Wherever green is worn,
Are changed, changed utterly:
A terrible beauty is born.

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