Date: w. 1742-1750, 1803

"Ne ought with him availeth sexe or age; / Ne hoary elde, ne tender infant's cries / Can melt his iron heart in any wise"

— Cambridge, Richard Owen (1717-1802)

Date: Tuesday, August 28, 1750

"Sorrow is a kind of rust of the soul, which every new idea contributes in its passage to scour away."

— Johnson, Samuel (1709-1784)

Date: 1751

Religion shall "Shall purge their Minds from all impure Allays / Of sordid Selfishness and brutal Sense,"

— West, Gilbert (1703-1756)

Date: 1751

"[M]y mother's arguments had steeled his heart"

— Lennox, née Ramsay, (Barbara) Charlotte (1730/1?-1804)

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: 1751, 1774

"Her heart pursued spite with black intent, / Ne could her iron mind at human woes relent."

— Lloyd, Robert (bap. 1733, d. 1764)

Date: 1752

"The Man, who sharpen'd first the warlike Steel, / How fell and deadly was his iron Heart"

— Hammond, James (1710-1742)

Date: 1752

"His Hope revives, fresh Courage steels his Heart."

— Browne, Moses (1706-1787)

Date: 1752, 1790

The gentleman "To Figg and Broughton ... commits his breast, / To steel it to the fashionable test

— Jenyns, Soame (1704-1787)

Date: 1752, 1791

"Is apathy, is heart of steel, / Nor ear to hear, nor sense to feel."

— Smart, Christopher (1722-1771)