” Our knowledge can only be finite, while our ignorance must necessarily be infinite. “


” Science must begin with myths, and with the criticism of myths. “


” We must plan for freedom, and not only for security, if for no other reason than that only freedom can make security secure. “


” In so far as a scientific statement speaks about reality, it must be falsifiable, and in so far as it is not falsifiable, it does not speak about reality. “



All 4 Karl Popper Quotes about Must in picture


Our knowledge can only be finite, while our ignorance must necessarily be infinite.
Science must begin with myths, and with the criticism of myths.


We must plan for freedom, and not only for security, if for no other reason than that only freedom can make security secure.
In so far as a scientific statement speaks about reality, it must be falsifiable, and in so far as it is not falsifiable, it does not speak about reality.
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