Date: 1745

"Thy Thoughts are vagabonds; all outward-bound, / Mid sands, and rocks, and storms, to cruise for pleasure; / If gain'd, dear-bought; and better miss'd than gain'd."

— Young, Edward (bap. 1683, d. 1765)

Date: 1745

"Canst thou be silent? No; for Wit is thine; / And Wit talks most when least she has to say, / And Reason interrupts not her career."

— Young, Edward (bap. 1683, d. 1765)

Date: 1787

"Still crowding thoughts, a pensive train, / Rose in my soul"

— Burns, Robert (1759-1796)

Date: 1791

"Come then, my soul, be this thy guest, / And leave to knaves and fools the rest."

— Cotton, Nathaniel, the elder (1705-1788)

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)