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, 1777

"If refined sense and exalted sense be not so useful as common sense, their rarity, their novelty, and the nobleness of their objects make some compensation, and render them the admiration of mankind: As gold, though less serviceable than iron, acquires, from its scarcity, a value, which is much ...

— Hume, David (1711-1776)

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: 1751, 1777

"The one [reason] discovers objects, as they really stand in nature, without addition or diminution: The other [taste] has a productive faculty, and gilding or staining all natural objects with the colours, borrowed from internal sentiment, raises, in a manner, a new creation."

— Hume, David (1711-1776)

Date: 1751

"[H]is heart was shod with a metal much harder than iron, which he was afraid nothing but hell-fire would be able to melt."

— Smollett, Tobias (1721-1777)

Date: 1751

"My breast, by wary maxims steel'd, / Not all those charms shall force to yield"

— Smollett, Tobias (1721-1777)

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)