Date: 1902

"Those traits which float like foam on the surface of a man's being should be put in this category."

— Spiller, Gustav (1864-1940)

Date: 1949

"The inner life is a stream of consciousness of such a sort that it would be absurd to suggest that the mind whose life is that stream might be unaware of what is passing down it."

— Ryle, Gilbert (1900-1976)

Date: 1949

"True, the evidence adduced recently by Freud seems to show that there exist channels tributary to this stream, which run hidden from their owner."

— Ryle, Gilbert (1900-1976)

Date: 1949

"Rather, to relapse perforce into simile, it is supposed that mental processes are phosphorescent, like tropical sea-water, which makes itself visible by the light which it itself emits."

— Ryle, Gilbert (1900-1976)

Date: 1992

"After a while, he no longer recognized what he was thinking and, just as a shop window sometimes prevents the onlooker from seeing the objects behind the glass and folds him instead in a narcissistic embrace, his mind ignored the flow of impressions from the outside world and locked him into a d...

— Edward St. Aubyn (b. 1960)

Date: 1999

"On its own this trigger, as we can see from the earlier definition, is not going to generate consciousness. Imagine a candyfloss machine with a stick in the centre that then gathers more and more candyfloss as time goes on. Think of the epicentre as the stick in the centre, the burgeoning candy...

— Greenfield, Susan (b. 1950)

Date: 1999

"Perhaps the consciousness of dreaming is the almost random formation of little groups forming in different configurations like pebbles thrown very gently into the water. One can imagine the gentle ripples easily being displaced by the next pebble as it hits the water."

— Greenfield, Susan (b. 1950)

Date: February 21, 2019

"It was a place where she knew what was going to happen, a place where she would always choose the right side, where the failure was in history and not in herself, where she did not read the wrong writers, was not seized with surges of enthusiasm for the wrong leaders, did not eat the wrong anima...

— Lockwood, Patricia

Date: May 28, 2023

"This is an acid bath for human cognition"

— Klein, Ezra (b. May 9, 1984)