Sir William Osler was a prominent physician and one of the founding professors of the Johns Hopkins Hospital. Born in 1849 in Canada, he is often referred to as the "Father of Modern Medicine" for his contributions to medical education and practice. Osler emphasized the importance of bedside clinical training and was a pioneer in the field of internal medicine. Osler authored the influential medical textbook, The Principles and Practice of Medicine, which became a standard reference for many years. He also played a key role in establishing the American Medical Association and was known for his belief in the importance of lifelong learning and compassionate patient care.