Date: 1714

"The most, such Iron Hearts we are, and such / The base Barbarity of Humane Kind, / Hooting and Railing, and with Villainous Hands / Gathering the Filth from out the Common Ways, / To hurl upon her Head."

— Gildon, Charles (1665-1724)

Date: 1731

"Such! as the softest Bosom steels!"

— Ogle, George (1704-1746); Joannes Secundus Nicolaius

Date: 1767

"Though arm'd with iron breast, and heart of steel, / Who slew the lion fell, lov'd Hylas fair, / Young Hylas graceful with his curling hair"

— Fawkes, Francis (1720-1777); Theocritus (3rd. Century. B.C.)

Date: 1779, 1781

"Truth indeed is always truth, and reason is always reason; they have an intrinsick and unalterable value, and constitute that intellectual gold which defies destruction: but gold may be so concealed in baser matter that only a chymist can recover it; sense may be so hidden in unrefined and plebe...

— Johnson, Samuel (1709-1784)

Date: 1791

"Hail to each ancient sacred shade / Of those, who gave the Muses aid, / Skill'd verse mysterious to unfold, / And set each brilliant thought in gold."

— Smart, Christopher (1722-1771)

Date: 1796

"He who feels the spirit in him, will be conscious of possessing the pearl of great price, and will lock it up in the sanctuary of his heart, as his richest treasure, never to be despoiled of it by the seducing arts of false philosophy; never to exchange that pure gold, which is the same yesterda...

— Anonymous

Date: 1922

"When the two gases previously mentioned are mixed in the presence of a filament of platinum, they form sulphurous acid. This combination takes place only if the platinum is present; nevertheless the newly formed acid contains no trace of platinum, and the platinum itself is apparently unaffected...

— Eliot, T. S. (1888-1965)