Date: 1667; 2nd ed. in 1674

"But knowledge is as food, and needs no less / Her temperance over appetite, to know / In measure what the mind may well contain; / Oppresses else with surfeit, and soon turns / Wisdom to folly, as nourishment to wind."

— Milton, John (1608-1674)

Date: 1667; 2nd ed. in 1674

"Mammon led them on-- / Mammon, the least erected Spirit that fell / From Heaven; for even in Heaven his looks and thoughts / Were always downward bent."

— Milton, John (1608-1674)

Date: 1667; 2nd ed. in 1674

"Mine eyes he closed, but open left the cell / Of fancy, my internal sight"

— Milton, John (1608-1674)

Date: 1671

"But he though blind of sight, / Despis'd and thought extinguish't quite, / With inward eyes illuminated / His fierie vertue rouz'd / From under ashes into sudden flame"

— Milton, John (1608-1674)

Date: 1817

"When no fair dreams before my "mind's eye" flit, / And the bare heath of life presents no bloom; / Sweet Hope, ethereal balm upon me shed, / And wave thy silver pinions o'er my head."

— Keats, John (1795-1821)

Date: 1817

"Stay! an inward frown / Of conscience bids me be more calm awhile."

— Keats, John (1795-1821)

Date: 1818

"Now I have tasted her sweet soul to the core / All other depths are shallow."

— Keats, John (1795-1821)

Date: 1822

"That he may stray league after league some great birthplace to find / And keep his vision clear from speck, his inward sight unblind. "

— Keats, John (1795-1821)

Date: 1848

The mind's palate may lose "its gust"

— Keats, John (1795-1821)

Date: 1848

" Yet can I think of thee till thought is blind."

— Keats, John (1795-1821)