The New York Times:
IN 1905, at age 55, Sir William Osler, the most influential physician of his era, decided to retire from the medical faculty of Johns Hopkins. In a farewell speech, Osler talked about the link between age and accomplishment: The “effective, moving, vitalizing work of the world is done between the ages of 25 and 40 — these 15 golden years of plenty.”
In comparison, he noted, “men above 40 years of age” are useless. As for those over 60, there would be an “incalculable benefit” in “commercial, political and professional life, if, as a matter of course, men stopped work at this age.”
Although such views did not prevent the doctor from going on to accept a post at Oxford University, one he retained until his death at age 70, his contention that brainpower, creativity and innovation have an early expiration date was, unfortunately, widely accepted by others. Until recently, neurologists believed that brain cells died off without being replaced. Psychologists affirmed the supposition by maintaining that the ability to learn trudged steadfastly downward through the years.
Read the whole story: The New York Times