"By giving external, visible form to ideas or perceptions
 that would otherwise be hidden inside the brain and body,
 drawing gives the drawer a chance to reexamine, revise and expand upon thoughts and feelings
in the light of day."
Andrea Kantrowitz, "Drawn to Discover: A Cognitive Perspective" (2012)

"The current revival of interest in freehand (analog) drawing is a predictable response to the deluge of new images available in print and on film, television, and the Internet. It echoes other moments in history: when movable type and the printing press allowed the Renaissance to be broadcast across the European world, and when photography, industrial publishing, and chromolithography energized the mid-nineteenth century."
The Visual Language of Drawing (2012)