Louis Pasteur

1822–1895 · French chemist & microbiologist

Louis Pasteur was a French chemist and microbiologist whose work on fermentation, pasteurization, and germ theory reshaped medicine and industry. He delivered the “prepared mind” line in 1854 as the founding dean of the science faculty at Lille, arguing that scientific luck rewards the disciplined observer — a maxim his own career of vaccines and disease research went on to embody.

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“Chance favors the prepared mind”

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