Karl Popper Quotes & Sayings

“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.”

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

“It is impossible to speak in such a way that you cannot be misunderstood.”

“Good tests kill flawed theories; we remain alive to guess again.”

“Those who promise us paradise on earth never produced anything but a hell.”

“No rational argument will have a rational effect on a man who does not want to adopt a rational attitude.”

“Piecemeal social engineering resembles physical engineering in regarding the ends as beyond the province of technology.”

“We have become makers of our fate when we have ceased to pose as its prophets.”

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