Date: 1681

"In Pow'r unpleas'd, impatient of Disgrace. / A fiery Soul, which working out its way, / Fretted the Pigmy-Body to decay; / And o'r inform'd the Tenement of Clay."

— Dryden, John (1631-1700)

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: 1686, 1689, 1697

"As soon as ever the Parts begin to be form'd by Nature, this Animal and active Principle begins to exert its Heat and Force, being lodged in the Heart as in the Centre of the Body, from whence, as the Vessels begin also to be form'd, it distributes it self towards the extreme Regions, communicat...

— Nourse, Timothy (c.1636–1699)

Date: 1688

"Sole Queen of my affections and desire, / That like to Ætna sets my heart on fire,"

— Scot, Walter (b. 1613, d. in or after 1688)

Date: 1690, 1694, 1695, 1700, 1706

"I shall not here enquire, though it may seem probable, that the Constitution of the Body does sometimes influence the Memory; since we oftentimes find a Disease quite strip the Mind of all its Ideas, and the flames of a Fever, in a few days, calcine all those Images to dust and confusion, which ...

— Locke, John (1632-1704)

Date: 1690, 1694, 1695, 1700, 1706

"But though we have, here and there, a little of this clear light, some sparks of bright knowledge; yet the greatest part of our ideas are such, that we cannot discern their agreement or disagreement by an immediate comparing them."

— Locke, John (1632-1704)

Date: 1691

"I was nothing but all Flame and Fire, and the red-hot Thoughts glared about my Brains at such a rate, and if visible, wou'd, I fancy, have made just such a dreadful Appearance as the Window of a Glass-house discovers in a dark Night--viz. a parcel of stragling fiery Globes marching about and hiz...

— Dunton, John (1659–1732)

Date: 1691

"Where lest a Cold oppress my vital part, / A gentle fire is kindled by the Heart."

— Dunton, John (1659–1732)

Date: 1691

"As for the Loves of these Villagers, the Intriegues of their Amours are not a little remarkable, they being very pretty Animals when disguis'd with that Passion: They are Tinder to such Flames, being quickly set on fire, even by the least spark, which when it hath catch'd the Match of their Soul...

— Dunton, John (1659–1732)

Date: 1691

The Soul's a Particle of Heavenly fire, / And boldly doth to every thing aspire: / But yet how low Her lofty Flights do fall; / When She attempts the Wonders of this Ball!"

— Heyrick, Thomas (bap. 1649. d. 1694)