Date: 1751

"This, and to see a succession of Humble Servants buzzing about a Mother, who took too much pride in addresses of that kind, what a beginning, what an example, to a constitution of tinder, so prepared to receive the spark struck from the steely forehead, and flinty heart, of such a Libertine, as ...

— Richardson, Samuel (bap. 1689, d. 1761)

Date: 1761

"But now Adversity's refining fire / Melts down the base alloy of earthly passions, / And purifies the temper of the heart."

— Cumberland, Richard (1732-1811)

Date: 1806

"Tho' party-zeal inflam'd his iron heart, / And prejudice sharp pointed ev'ry dart; / With glowing thoughts, his mind profusely teem'd."

— Jerningham, Edward (1727-1812)

Date: 2000

"I glimpsed a molten core to consciousness, a protean heat where everything could be reshaped. Yes, a molten core, like the core of the earth, deeper than the deposits of civilisation, beyond the complacencies of archaeology."

— Edward St. Aubyn (b. 1960)