Louis Pasteur

The 19th-century French scientist surfaces in Kyle’s corpus through two of his ideas. In The Faith of a Scientist by Henry Eyring, Pasteur supplies the book’s central framing device — his line about “two men in each one of us,” the scientist and the believer, held as complementary rather than competing. Eyring also invokes Pasteur’s successful treatment of rabies in July 1885 as a benchmark for scientific breakthrough, arguing that our present confusion about cancer parallels the confused state of all disease in Pasteur’s time; Kyle annotates that highlight simply “Pasteur.” Separately, in How to Maximize Serendipity, Pasteur’s maxim “chance favors the prepared mind” anchors the argument that serendipity is a deliberately cultivable state of mind rather than pure luck.

Context: Louis Pasteur (1822–1895) was a French chemist and microbiologist whose work founded the germ theory of disease, pasteurization, and vaccines for rabies and anthrax.

Where this appears

• The Faith of a Scientist — Pasteur’s “two men in each one of us” is Eyring’s framing device for science and faith; his rabies cure is a touchstone for hoped-for medical breakthroughs.
• How to Maximize Serendipity — “Chance favors the prepared mind” grounds the claim that serendipity can be deliberately maximized.