Date: 170

"The heart is, as it were, the hearthstone and source of the innate heat by which the animal is governed."

— Galen (129-200)

Date: 1715

There may be "one Spark of Pity left behind / To form the least Impression on your Mind"

— Brown, Thomas (bap. 1663, d. 1704)

Date: 1742

"AN Inward Baptism of Fire / Wherewith to be baptiz'd I have; / 'Tis all my longing Soul's Desire, / This, only This my soul can save."

— Wesley, John and Charles

Date: 1814

The heart may never feel a second flame

— Gray, Thomas (1716-1771)

Date: 1922

"I plucked my soul out of its secret place, / And held it to the mirror of my eye, / To see it like a star against the sky, / A twitching body quivering in space, / A spark of passion shining on my face."

— McKay, Claude (1889-1948)