Date: 1755

Mine eyes he clos'd, but open left the cell, / Of fancy, my internal sight.

— Milton [from Johnson's Dictionary of the English Language]

Date: 1755

"But since the brain doth lodge the pow'rs of sense, / How makes it in the heart those passions spring?"

— Davies [from Johnson's Dictionary of the English Language]

Date: 1797

"Tabula rasa. Lat.--'A shaved or smoothed tablet.'--His mind is a tabula rasa--it is a mere blank."

— MacDonnel, David Evans (fl. 1797)

Date: 1901

"The double aspect theory ... professes to overcome the onesidedness of these two theories [materialism and idealism] by regarding both series as only different aspects of the same reality, like the convex and the concave views of a curve (G.H. Lewes); or, according to another favourite metaphor,...

— Baldwin, James Mark (1861-1934)

Date: 1901

"Repeating Locke's metaphor, Kant blames Hume for declaring certain questions to lie beyond the 'horizon' of human knowledge, without determining where that horizon falls."

— Baldwin, James Mark (1861-1934)

Date: 1916

"Little minds, like weak liquors, are soonest soured."

— Wilstach, Frank J.