Date: June, 1720

"Daring and unco' stout he was, / With Heart hool'd in three Sloughs of Brass, Wha ventur'd first upon the Sea / With Hempen Branks, and Horse of Tree"

— Ramsay, Allan (1684-1758)

Date: 1721

"For who can hear the Lad complain, / And not participate and feel / His artless undissembled Pain, / Unless he has a Heart of Steel."

— Ramsay, Allan (1684-1758)

Date: 1721

"Their Hearts made of Stone, or of Steel are, / That are not Adorers of KATE."

— Ramsay, Allan (1684-1758)

Date: 1722

"nor is my heart nae mair than yours of steel"

— Ramsay, Allan (1684-1758)

Date: 1743

"In that dread Moment, how the frantick Soul / Raves round the Walls of her Clay Tenement, / Runs to each Avenue, and shrieks for Help, / But shrieks in vain!"

— Blair, Robert (1699-1746)

Date: 1757, 1769

"As thus to touch his iron heart they try'd, / The Cyclops smiling, scornful thus reply'd:"

— Wilkie, William (1721-1772)

Date: 1760

"O happy stroke, that bursts the bonds of clay, / Darts through the rending gloom the blaze of day, / And wings the soul with boundless flight to soar, / Where dangers threat, and fears alarm no more."

— Beattie, James (1735-1803)

Date: 1786

"But if (which Pow'rs above prevent) / That iron-hearted carl, Want, / Attended, in his grim advances, / By sad mistakes, and black mischances"

— Burns, Robert (1759-1796)