Date: September 10, 1802

"A Poet's Heart & Intellect should be combined, intimately combined & unified, with the great appearances in Nature -- & not merely held in solution & loose mixture with them, in the shape of formal Similies."

— Coleridge, Samuel Taylor (1772-1834)

Date: November 10, 1813

"I by no means rank poetry or poets high in the scale of intellect. This may look like affectation, but it is my real opinion. It is the lava of the imagination whose eruptions prevents an earthquake."

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

Date: 1820

"And they [Stewart, Tracy, Cabanis] ask why may not the mode of action called thought, have been given to a material organ of peculiar structure, as that of magnetism is to the needle, or of elasticity to the spring by a particular manipulation of the steel."

— Jefferson, Thomas (1743-1826)

Date: 1820

"When I meet with a proposition beyond finite comprehension, I abandon it as I do a weight which human strength cannot lift, and I think ignorance, in these cases, is truly the softest pillow on which I can lay my head."

— Jefferson, Thomas (1743-1826)

Date: August 16, 1820

"And is not this extraordina[r]y talk for the writer of Endymion? whose mind was like a pack of scattered cards--I am pick'd up and sorted to a pip."

— Keats, John (1795-1821)

Date: August 16, 1820

"My Imagination is a Monastery and I am its Monk--you must explain my metap^cs to yourself."

— Keats, John (1795-1821)

Date: December 27, 1823

"Now in filling my mind with them [ideas and facts], and in warming and animating me, you would, I doubt not, do me great good. And I am one of those substances, like sealing wax and other electric bodies, which require to be warmed in order to possess the faculty of attracting objects, of coveri...

— Wilberforce, William (1759-1833)

Date: January 8, 1824

"The string you touched in your last truly kind letter has been vibrating ever since, and making music most delightful to a parent's mental ear; an organ not commonly noticed, but which is full as much in daily exercise as the mind's eye of which we speak so familiarly."

— Wilberforce, William (1759-1833)

Date: September, 1838

"The tree of my mind of its leaves is stripped, my witticisms too fine are clipped, the kernel out of the shell has been nipped."

— Engels, Friedrich (1820-1895)

Date: September, 1843

"In Germany, everything is forcibly suppressed; a real anarchy of the mind, the reign of stupidity itself, prevails there, and Zurich obeys orders from Berlin."

— Marx, Karl (1818-1883)