Date: 1815

The wavering motions of the mind are like "quivering light" reflected off a confined "crystal flood" in a brass cistern

— Cowper, William (1731-1800)

Date: 1822

"Thrice has a gloomy vision hunted me / As thus from sleep into the troubled day; / It shakes me as the tempest shakes the sea, / Leaving no figure upon memory's glass"

— Shelley, Percy Bysshe (1792-1822)

Date: 1824

"What do I say--a mirror of my heart? / Are not thy waters sweeping, dark, and strong? / Such as my feelings were and are, thou art; / And such as thou art were my passions long."

— Byron, George Gordon Noel, sixth Baron Byron (1788-1824)