Date: 1678, 2nd edition in 1743

"For though the Geometrician perceive himself to make Lines, Triangles and Circles in the Dust, with his Finger, yet he is not aware, how he makes all those same Figures, first upon the Corporeal Spirits of his Brain, from whence notwithstanding, as from a Glass, they are reflected to him, Fancy ...

— Cudworth, Ralph (1617-1688)

Date: 1692

"We Truth by a Refracted ray / View, like the Sun at Ebb of day: / Whom the gross, treacherous Atmosphere / Makes where it is not, to appear."

— Norris, John (1657-1712)

Date: 1701, 1704

"As in a Looking-glass, in which he that looks does indeed immediately behold the Species in the Glass, but does also at the same time actually behold Peter or Paul whose Image it is."

— Norris, John (1657-1712)

Date: 1701, 1704

"The application of our Thoughts to other Subjects is like looking upon the Rays of the Sun as it shines to us from a Wall, or upon the Image of it as it returns from a Watry Mirrour, but this is looking up directly against the Fons veri lucidus, the bright Source of Intellectual Light a...

— Norris, John (1657-1712)