Date: 1975

"The remainder [of the brain] is more like an exposed negative waiting to be dipped into developer fluid."

— Wilson, E. O. (b. 1929)

Date: 1980

"Cause is the cement of the universe; the concept of cause is what holds together our picture of the universe, a picture that would otherwise disintegrate into a diptych of the mental and the physical."

— Davidson, Donald (1917-2003)

Date: 1984

"In his mind's eye, a kind of time-lapse photography took place, revealing the thing as the biological equivalent of a machine gun, hideous in its perfection."

— Gibson, William (b. 1948)

Date: 1990

"But in the case of her visual experience of a tree, I want to say that she is not aware of, as it were, the mental paint by virtue of which her experience is an experience of seeing a tree."

— Harman, Gilbert (b. 1938)

Date: 1990

"Some sense datum theorists will object that Eloise is indeed aware of the relevant mental paint when she is aware of an arrangement of color, because these sense datum theorists assert that the color she is aware of is inner and mental and not a property of external objects."

— Harman, Gilbert (b. 1938)