Date: 1851

"And just as one spoils the stomach by overfeeding and thereby impairs the whole body, so can one overload and choke the mind by giving it too much nourishment."

— Schopenhauer, Arthur (1788-1860)

Date: 1854

"The surface of the earth is soft and impressible by the feet of men; and so with the paths which the mind travels."

— Henry David Thoreau (1817-1862)

Date: September 20, 1858

"The news of the new treaty wrung from China by the allied Plenipotentiaries has, it would appear, conjured up the same wild vistas of an immense extension of trade which danced before the eyes of the commercial mind in 1845, after the conclusion of the first Chinese war."

— Marx, Karl (1818-1883)

Date: April, 1871

"Strong convictions gave him a kind of cramp in the will, and he could not act on them."

— Bagehot, William (1826-1877)

Date: 1878, 1879, 1880

"Neid und Eifersucht sind die Schamtheile der menschlichen Seele [Envy and jealousy are the privy parts of the human soul]."

— Nietzsche, Friedrich (1844-1900)

Date: 1883-1885

"The body is a great intelligence, a multiplicity with one sense, a war and a peace, a herd and a herdsman."

— Nietzsche, Friedrich (1844-1900)

Date: January, 1884

"But as the distribution of brain-tension shifts from one relative state of equilibrium to another, like the aurora borealis or the gyrations of a kaleidoscope, now rapid and now slow, is it likely that the brain's faithful psychic concomitant is heavier-footed than itself, that its rate of chang...

— James, William (1842-1910)

Date: January, 1884

"The significance, the value, of the image is all in this halo or penumbra, that surrounds and escorts it, -- or rather that is fused into one with it and has become bone of its bone and flesh of its flesh; leaving it, it is true, an image of the same thing it was before, but making it a...

— James, William (1842-1910)

Date: January, 1884

"The present image shoots its perspective far before it, irradiating in advance the regions in which lie the thoughts as yet un-born."

— James, William (1842-1910)

Date: January, 1884

"A word about the back-bone of the human mind, the psychological principle of identity, will help us here."

— James, William (1842-1910)