Date: 1652

"Many sparks and appearances fly from variety of objects to the understanding; The minde, that catches them all, and cherishes them, and blows them; and thus the Candle of knowledge is lighted."

— Culverwell, Nathanael (bap. 1619, d. 1651)

Date: 1674

"And as for the Bipartition of this Sensitive Soul into two principle members as it were, or active sourses; vix. the Fiery part, upon which Life depends; and the Lucid, from whence all the faculties Animal are, like so many distinct rayes of light, derived."

— Charleton, Walter (1620-1707)

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: 1711

"Th' infernal Guest, where'er she comes, inspires / The People's Breasts with fierce Phrenetick Fires."

— Blackmore, Sir Richard (1654-1729)

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: January 1739

"In that case resemblance converts the idea into an impression, not only by means of the relation, and by transfusing the original vivacity into the related idea; but also by presenting such materials as take fire from the least spark."

— Hume, David (1711-1776)

Date: January 1739

"The Duc de la Rochefoucault has very well observed, that absence destroys weak passions, but encreases strong; as the wind extinguishes a candle, but blows up a fire"

— Hume, David (1711-1776)

Date: 1744

"When souls take fire / At high presumptions of their own desert, / One age is poor applause; the mighty shout, / The thunder by the living few begun, / Late time must echo; worlds unborn, resound."

— Young, Edward (bap. 1683, d. 1765)

Date: 1744

"I see, / I feel a grandeur in the Passions too, / Which speaks their high descent, and glorious end; / Which speaks them rays of an eternal fire."

— Young, Edward (bap. 1683, d. 1765)

Date: 1770

"The captious turn of an habitual wrangler deadens the understanding, sours the temper, and hardens the heart: by rendering the mind suspicious, and attentive to trifles, it weakens the sagacity of instinct, and extinguishes the fire of imagination; it transforms conversation into, a state of war...

— Beattie, James (1735-1803)