William Cullen

Cullen, a key Scottish Enlightenment figure and highly influential as a teacher of medicine and chemistry, gave the first demo of artificial refrigeration, and coined the term ‘neurosis’. Hunter was his apprentice and friend, living in his house for three years. Black (protégé, friend and colleague), Rush and Withering were among his students, and Smith a lifelong friend; Cullen advised him to ride at least 500 miles if he wanted to survive the next Scottish winter. Hutton was another close friend, and Pringle a warm correspondent. He saw his friend Hume on his deathbed. Johnson described him as “very entertaining.”