They were madmen, but they had in them that little flame which never dies.

-Renoir, Pierre Auguste
On the Communards. Quoted in A J P Taylor From Napoleon to the Second International (1993).

Nought so of love this looser dame did skill, But as a coal to kindle fleshly flame, Giving the bridle to her wanton will, And treading underfoot her honest name.

-Spenser, Edmund
  Of Malecasta.The Faerie Queen, bk.3, canto1, stanza 50.

All in the blue unclouded weather Thick-jewelled shone the saddle leather, The helmet and the helmet-feather Burned like one burning flame together, As he rode down to Camelot.

-Tennyson
  Poems,'The Lady of Shalott' (revised1842), pt.3, l.91^5.

Be near me when my light is low, When the blood creeps, and the nerves prick And tingle; and the heart is sick, And all the wheels of Being slow. Be near me when the sensuous frame Is racked with pains that conquer trust; And Time, a maniac scattering dust, And Life, a Fury slinging flame.

-Tennyson
  In Memoriam A.H.H., canto 50, l.1^8.