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
Those who promise us paradise on earth never produced anything but a hell. – Karl Popper
No rational argument will have a rational effect on a man who does not want to adopt a rational attitude. – Karl Popper
Heres a nation, one of the founding pillars was freedom of speech and freedom of expression. And yet, we have imposed upon people restrictions on what they can say, on what they can think. And the media is the largest proponent of this, crucifying people who say things really quite innocently. – Benjamin Carson