Dr. Gregory, professor of the practice of physic at Edinburgh, was one of the first to enroll himself in the Royal Edinburgh Volunteers, when that corps was raised. So anxious was he to make himself master of military tactics, that he not only paid the most punctual attendance on all the regimental field-days, but studied at home for several hours a day, under the sergeant-major of the regiment. On one of these occasions the sergeant, out of all temper at the awkwardness of his learned pupil, exclaimed in a rage, "Why, sir, I would rather teach ten fools than one philosopher."