“In life, you must devote all your efforts to doing the best you can. And since we spoke at length just now about my studies, let me tell you the secret that led me to my success: My only strength is my tenacity.”
Louis Pasteur (verified)
• Title: Oeuvres de Pasteur
• Author: Louis Pasteur
• Type: Book
• Publisher: Masson
• Publication time: 1922
• Publication place: Paris, France
• Link: https://archive.org/details/oeuvresp07pastuoft/page/390/mode/2up