Date: August 31, 1837

"For this self-trust, the reason is deeper than can be fathomed, — darker than can be enlightened."

— Emerson, Ralph Waldo (1803-1882)

Date: w. 1821, 1840

"Reason is to imagination as the instrument to the agent, as the body to the spirit, as the shadow to the substance."

— Shelley, Percy Bysshe (1792-1822)

Date: 1845

"Their minds had been starved by their cruel masters. They had been shut up in mental darkness."

— Douglass, Frederick (1818-1895)

Date: 1848

"O that our dreamings all, of sleep or wake, / Would all their colours from the sunset take: / From something of material sublime, / Rather than shadow our own soul's day-time / In the dark void of night."

— Keats, John (1795-1821)