William Osler

Sir William Osler, 1st Baronet, was a Canadian physician, medical educator, and medical historian revered throughout the English-speaking world as the quintessential clinician. Educated at McGill University in Montreal, Osler became one of the illustrious 'Big Four' founding professors of Johns Hopkins Hospital in Baltimore in 1889, where he was appointed Physician-in-Chief.

Osler revolutionized medical education by transforming how doctors are trained: he took students out of traditional lecture halls and brought them directly to the patient's bedside, declaring: 'He who studies medicine without books sails an uncharted sea, but he who studies medicine without patients does not go to sea at all.' At Johns Hopkins, he created the modern medical residency system and clinical clerkships. In 1892, he published The Principles and Practice of Medicine, which remained the world's standard medical textbook for four decades and inspired the founding of the Rockefeller Institute for Medical Research. In 1905, he was appointed Regius Professor of Medicine at Oxford.