Without observation of the living body, there can be no pathology. Observation needs certain helps to give it a pathological aim; but these are only subordinate; and it still belongs to observation to concentre all that they are capable of teaching in the real knowledge of disease.

Lectures on Subjects Connected With Clinical Medicine, Lecture IV (p. 89), Longman, Rees, Orme, Brown, Green & Longman., 1836