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The phenomenon develops calmly, but it is invisible, unstoppable.

— Léon Foucault

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More quotes by Léon Foucault

To contribute usefully to the advance of science, one must sometimes not disdain from undertaking simple verifications.

Above all, we must be accurate, and it is an obligation which we intend to fulfill scrupulously.

You are invited to come to see the Earth turn, tomorrow, from three to five, at Meridian Hall of the Paris Observatory.

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Quote text and notes from Wikiquote: Léon Foucault (page history), available under CC BY-SA 4.0. Source quality and labels are our own summary of what Wikiquote records.