“And ere the dawn of day appear'd,
In Cumnor Hall, so lone and drear,
Full many a piercing scream was heard,
And many a cry of mortal fear.”

Stanza 1, quoted in Walter Scott's Kenilworth (1821), Ch. 6. Compare: "Jove, thou regent of the skies", Alexander Pope, The Odyssey, book ii, line 42; "Now Cynthia, named fair regent of the night", John Gay, Trivia, book iii; "And hail their queen, fair regent of the night", Erasmus Darwin, The Botanic Garden, part i, canto ii, line 90.
Cumnor Hall (1784)

Stanza 26, quoted in Walter Scott's Kenilworth, Ch. 41.
Cumnor Hall (1784)

Don Quixote in Prologue
Variant: When so many are lonely as seem to be lonely, it would be inexcusably selfish to be lonely alone.
Source: Camino Real (1953)

Source: The Gun Seller

"The Scarlet Citadel" (1933)

King Henry, Act II, scene v.
Henry VI, Part 3 (1592)

2013, "Let Freedom Ring" Ceremony (August 2013)
Context: There’s a reason why so many who marched that day, and in the days to come, were young -- for the young are unconstrained by habits of fear, unconstrained by the conventions of what is. They dared to dream differently, to imagine something better. And I am convinced that same imagination, the same hunger of purpose stirs in this generation. We might not face the same dangers of 1963, but the fierce urgency of now remains. We may never duplicate the swelling crowds and dazzling procession of that day so long ago -- no one can match King’s brilliance -- but the same flame that lit the heart of all who are willing to take a first step for justice, I know that flame remains.

Source: Clockwork Prince