Date: April 18, 2011

"And so it goes, researchers say, with most study sessions: difficulty builds mental muscle, while ease often builds only confidence."

— Carey, Benedict (b. 1960)

Date: October 28, 2012

"Each grasped, in the unflinching gaze of the other, a silent acknowledgment of the nobility of man, especially as manifested in work, the work that purified the soul the way steel is purified in the smelter. That sort of thing."

— Saunders, George (b. 1958)

Date: September 27, 2012

"The conservative mind, a repository of fresh ideas just two decades ago, is now little more than a click-click slide projector holding a tray of apocalyptic images of modern life that keeps spinning around, raising the viewer’s fever with every rotation."

— Lilla, Mark (b. 1956)

Date: August, 2014

"A universe of information swirled around in his brain."

— Thomas, Matthew

Date: January 29, 2020

"I would argue that his [Donald Trump's] mind, while a lot of things, including a landfill for the rancid refuse of pure appetite, is not exactly intricate."

— Pierce, Charles P. (b. 1953)