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Louis Pasteur: Let me tell you the secret that has led me to my goal: my strength lies solely…

Let me tell you the secret that has led me to my goal: my strength lies solely in my tenacity.
Louis PasteurSourced
Source
Speech to the National Congress of Veterinary Surgeons, Paris, 1885; Journal de l'agriculture, 7 November 1885, pp. 723-724; Oeuvres de Pasteur, vol. 7, 1939
Also quoted as
Also quoted as “The secret that has led to my goal is that my strength lies solely in my tenacity.”

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