No rational argument will have a rational effect on a man who does not want to adopt a rational attitude.
Karl Popper
We must plan for freedom, and not only for security, if for no other reason than that only freedom can make security secure.
Karl Popper
Our knowledge can only be finite, while our ignorance must necessarily be infinite.
Karl Popper
Science may be described as the art of systematic over-simplification.
Karl Popper
Science must begin with myths, and with the criticism of myths.
Karl Popper
Piecemeal social engineering resembles physical engineering in regarding the ends as beyond the province of technology.
Karl Popper