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)

Date: 1992

"After a while, he no longer recognized what he was thinking and, just as a shop window sometimes prevents the onlooker from seeing the objects behind the glass and folds him instead in a narcissistic embrace, his mind ignored the flow of impressions from the outside world and locked him into a d...

— Edward St. Aubyn (b. 1960)