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Date: 1664

"The parts of the blood which penetrate as far as the brain serve not only to nourish and sustain its substance, but also and primarily to produce in it a certain very fine wind, or rather a very lively and pure flame, which is called the animal spirits."

— Descartes, René (1596-1650)

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Date: 1665

"Absence lessens moderate passions and intensifies great ones, as the wind blows out a candle but fans up a fire"

— La Rochefoucauld, François, duc de (1613-1680)

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Date: 1665

"But as though grains of Sand and Ashes be a part, but of a despicable smallness, and very easie, and liable to be scatter'd, and blown away; yet the skilful Artificer, by a vehement Fire, brings Numbers of these to afford him that noble substance, Glass, by whose help we may both see our selves,...

— Boyle, Robert (1627-1691)

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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)

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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)

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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)

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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)

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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)

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Date: 1697

The soul may be a "Modification or Power of the Body" so that it eventually ceases to act, "either perishing, as a Flame when the Fewel is spent; or returning to its Fountain, whatsoever it was"

— Burnet, Thomas (c.1635-1715)

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Date: 1697

"If a Flame be extinct, the same cannot return, but a new one may be made."

— Burnet, Thomas (c.1635-1715)

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The Mind is a Metaphor is authored by Brad Pasanek, Assistant Professor of English, University of Virginia.