I think that only daring speculation can lead us further and not accumulation of facts.

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Source: Letter to Michele Besso (8 October 1952). According to Scientifically speaking: a dictionary of quotations, Volume 1 (2002), p. 154, the letter is reprinted on p. 487 of Correspondance 1903-1955 (1972) by Michele Besso.

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This source-reviewed Einstein quotation develops a complete idea around think, daring, speculation. The wording "I think that only daring speculation can lead us further…" is tied to Letter to Michele Besso (8 October 1952). According to Scientifically speaking: a diction…, so readers can connect its themes of honesty and philosophy to a documented context rather than a detached slogan.

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  • Use "I think that only daring speculation can lead us further…" in a honesty discussion, then ask which concrete claim the wording makes.
  • Compare its treatment of think with daring in a lesson, essay, or editorial note before drawing a conclusion.
  • When publishing or narrating it, retain the documented source trail to Letter to Michele Besso (8 October 1952). According to Scientifically speaking: a diction… so the quotation stays connected to its original context.