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

Karl Popper · Conjectures and Refutations (1963)

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.

Karl Popper · The Logic of Scientific Discovery (1959 edition), appendix

Karl Popper

Karl Popper · The Open Society and Its Enemies (1945)

More Learning Quotes

Aristotle · The opening sentence of the Metaphysics, in W. D. Ross's standard English translation.

Samuel Johnson

Johann Wolfgang von Goethe · From Goethe's maxims.

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