Bold ideas, unjustified anticipations, and speculative thought, are our only means for interpreting nature: our only organon, our only instrument, for grasping her. And we must hazard them to win our prize. Those among us who are unwilling to expose their ideas to the hazard of refutation do not take part in the scientific game.

— Karl Popper The Logic of Scientific Discovery (1934)

More quotes by Karl Popper

The Open Society and Its Enemies (1945)

The Open Society and Its Enemies (1945)

The Open Universe : An Argument for Indeterminism (1992)

Conjectures and Refutations: The Growth of Scientific Knowledge (1963)

In Search of a Better World (1984)

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