Understanding requires the courage to challenge what we thin... - Karl Landsteiner

This quote is attributed to Karl Landsteiner.

"Understanding requires the courage to challenge what we think we know."

Karl Landsteiner Courage

Immunologist Austrian-American 1868–1943

More from Karl Landsteiner

"Science is organized knowledge."

"The unknown is always feared."

"Discovery requires curiosity and patience."

"Blood types reveal the hidden connections between humanity."

"Never let fear stop you from chasing your dreams."

"Courage is being afraid but doing it anyway."

"Sometimes you gotta do what you gotta do."

"Sometimes you have to be the monster to stop the monsters."