Date: 1789, 1800

"On his one ruling passion Sir Pope hugely labors, / That, like th'old Hebrew walking-switch, eats up its neighbours."

— Burns, Robert (1759-1796)

Date: 1790, 1794, 1795, 1818, 1827

"The man who never alters his opinion is like standing water, & breeds reptiles of the mind."

— Blake, William (1757-1827)

Date: 1791

"In his soul was the serpent coil'd round in his heart, hid from the light, as in a cleft rock"

— Blake, William (1757-1827)

Date: October 4, 1802

"Hence, viper thoughts, that coil around my mind, / Reality's dark dream! / I turn from you, and listen to the wind, / Which long has raved unnoticed."

— Coleridge, Samuel Taylor (1772-1834)