Date: w. 1628, published in 1684, 1701

"For the human mind has within it a sort of spark of the divine, in which the first seeds of useful ways of thinking are sown, seeds which, however neglected and stifled by studies which impede them, often bear fruit of their own accord."

— Descartes, René (1596-1650)

Date: 1706

"And therefore wert thou bred to virtuous Knowledge, / And Wisdom early planted in thy Soul; / That thou might'st know to rule thy fiery Passions, / To bind their Rage, and stay their headlong Course."

— Rowe, Nicholas (1674-1718)

Date: 1711

"When Fancy makes superior Flight her Aim, / Wing'd with this vig'rous, clear seraphick Flame, / She ranges Nature's universal Frame; / Bright Seeds of Thought from various Objects takes, / Whence her fair Scenes and Images she makes: / Spirits so swift, so fine, so bold, so strong, / Gave Milton...

— Blackmore, Sir Richard (1654-1729)

Date: 1745

"Soon as his Breast receiv'd the potent Ray, / Whate'er possest it, instantly gave way; / As in the Wood before the Lightning's Beam, / Perish the Leaves, and the whole Tree is Flame."

— Whaley, John (bap. 1710, d. 1745)

Date: November 10, 1750

"Is it that a long commerce with the world does indeed corrupt the heart; and extinguish by degrees those sparks of light, those inclinations to good, which were implanted in our minds?"

— Mulso [later Chapone], Hester (1727-1801)

Date: 1765

"Modern philosophers give them other fine names and Julius Scaliger, in particular, used to call them "seeds of eternity" and also "zopyra"--meaning living fires or flashes of light hidden inside us but made visible by stimulation of the senses, as sparks can be struck by steel."

— Leibniz, Gottfried Wilhelm (1646-1716)

Date: 1778

The "pure flame" of virtue is planted "by an unerring rule" and glows in the heart

— Burney [married name D'Arblay], Frances (1752-1840)

Date: 1788

"For they have keen affections, kind desires, / Love strong as death, and active patriot fires; / All the rude energy, the fervid flame, / Of high-souled passions, and ingenuous shame: / Strong but luxuriant virtues boldly shoot / From the wild vigour of a savage root."

— More, Hannah (1745-1833)

Date: 1788

"Or, if where savage habit steels / The vulgar mind, one bosom feels / The sacred claim of helpless woe-- / If Pity in that soil can grow; / Pity! whose tender impulse darts / With keenest force on nobler hearts; / As flames that purest essence boast, / Rise highest when they tremble most."

— Williams, Helen Maria (1759-1827)