Date: 1817

"When some bright thought has darted through my brain: / Through all that day I've felt a greater pleasure / Than if I'd brought to light a hidden treasure."

— Keats, John (1795-1821)

Date: 1820

"And we breathe, and sicken not, / The atmosphere of human thought: / Be it dim, and dank, and gray, / Like a storm-extinguished day, / Travelled o'er by dying gleams; / Be it bright as all between / Cloudless skies and windless streams, / Silent, liquid, and serene; / As the birds within the win...

— Shelley, Percy Bysshe (1792-1822)

Date: 1850

"No familiar shapes / Remained, no pleasant images of trees, / Of sea or sky, no colours of green fields; / But huge and mighty forms, that do not live / Like living men, moved slowly through the mind / By day, and were a trouble to my dreams."

— Wordsworth, William (1770-1850)