"No rational argument will have a rational effect on a man who does not want to adopt a rational attitude."
"Choosing to be positive and having a grateful attitude is going to determine how you're going to live your life."Karl Popper on Joel Osteen
"My attitude is that if you push me towards something that you think is a weakness, then I will turn that perceived weakness into a strength."Karl Popper on Michael Jordan
"Weakness of attitude becomes weakness of character."Karl Popper on Albert Einstein
"Nothing can stop the man with the right mental attitude from achieving his goal nothing on earth can help the man with the wrong mental attitude."Karl Popper on Thomas Jefferson
"Attitude is a little thing that makes a big difference."Karl Popper on Winston Churchill
"We must plan for freedom, and not only for security, if for no other reason than that only freedom can make security secure."
"Our knowledge can only be finite, while our ignorance must necessarily be infinite."
"Science may be described as the art of systematic over-simplification."
"Science must begin with myths, and with the criticism of myths."
"Piecemeal social engineering resembles physical engineering in regarding the ends as beyond the province of technology."
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