We must be bold in our ideas but careful in our conclusions. - Karl Popper

"We must be bold in our ideas but careful in our conclusions."

Karl Popper Courage

Philosopher Austrian-British 1902–1994

More from Karl Popper

"The task is not so much to see what no one has yet seen, but to think what nobody has yet thought about that which everybody sees."

"All life is problem solving."

"Science may be described as the art of systematic over-simplification."

"The more you know, the more you realize you know nothing."

"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."