Wilson's efforts to reform Princeton earned him national notoriety, but they also took a toll on his health. In 1906, Wilson awoke to find himself blind in the left eye, the result of a blood clot and hypertension. Modern medical opinion surmises Wilson had suffered a stroke—he later was diagnosed, as his father had been, with hardening of the arteries. He began to exhibit his father's traits of impatience and intolerance, which would on occasion lead to errors of judgment. When Wilson began vacationing in Bermuda in 1906, he met a socialite, Mary Hulbert Peck. According to biographer August Heckscher, Wilson's friendship with Peck became the topic of frank discussion between Wilson and his wife, although Wilson historians have not conclusively established there was an affair. Wilson also sent very personal letters to her which would later be used against him by his adversaries.