More quotes by Karl Popper

"No rational argument will have a rational effect on a man who does not want to adopt a rational attitude."
"No book can ever be finished. While working on it we learn just enough to find it immature the moment we turn away from it"
"Whenever a theory appears to you as the only possible one, take this as a sign that you have neither understood the theory nor the problem which it was intended to solve."
"Science may be described as the art of systematic oversimplification."
"No book can ever be finished. While working on it we learn just enough to find it immature the moment we turn away from it"