Date: July, 1962; November 22, 1962; 1973

"Some of my characters are, no doubt, pretty beastly, but I really don't care, they are outside my inner self like the mournful monsters of a cathedral façade--demons placed there merely to show that they have been booted out."

— Nabokov, Vladimir (1899-1977)

Date: January 11, 2014

"As your body sleeps, your brain is quite actively playing the part of mental janitor: It’s clearing out all of the junk that has accumulated as a result of your daily thinking."

— Konnikova, Maria (b. 1984)

Date: January 11, 2014

"One day, scientists might be able to successfully mimic the expansion of the interstitial space that does the mental janitorial work so that we can achieve maximally efficient round-the-clock brain trash pickup."

— Konnikova, Maria (b. 1984)

Date: January 11, 2014

"It's [concerning sleep loss] like the difference between a snowstorm's disrupting a single day of trash pickup and a prolonged strike. No longer quite as easy to fix, and even when the strike is over, there's likely to be some stray debris floating around for quite some time yet."

— Konnikova, Maria (b. 1984)