Date: 1911

"The psychical is divided (to speak metaphorically and not metaphysically) into monads that have no windows and are in communication only through empathy."

— Husserl, Edmund (1859-1938)

Date: 1964

"Its productivity and efficiency, its capacity to increase and spread comforts, to turn waste into need, and destruction into construction, the extent to which this civilization transforms the object world into an extension of man's mind and body makes the very notion of alienation questionable. ...

— Marcuse, Herbert (1898-1979)

Date: 1970

"I should, rather, speak of a labyrinth. I am not concerned here with what is installed in the chamber at its enigmatic centre, ego or fate, but all the more with the many entrances leading into the interior."

— Benjamin, Walter (1892-1940)