"The space of our primary perception, the space of our dreams and that of our passions hold within themselves qualities that seem intrinsic: there is a light, ethereal, transparent space, or again a dark, rough, encumbered space; a space from above, of summits, or on the contrary a space from below of mud; or again a space that can be flowing like sparkling water, or space that is fixed, congealed, like stone or crystal."                
                                                                                          – Michel Foucault, Of Other Spaces, 1967

"I have often imagined the monster of sleep as a heavy, giant head with a tapering body held up by the crutches of reality. When the crutches break we have the sensation of falling."
                                                                                          – Salvador Dali, The Secret Life of Salvador Dali, 1942