101. The treatment also of such subjects as the teaching of faith, instruction on self-restraint, discussion on justice, exhortation to activity, must not be taken up by us and fully gone into all at one time, but must be carried on in course, so far as we can do it, and as the subject-matter of the passage allows. Our discourse must not be too lengthy, nor too soon cut short, for fear the former should leave behind it a feeling of aversion, and the latter produce carelessness and neglect. The address should be plain and simple, clear and evident, full of dignity and weight; it should not be studied or too refined, nor yet, on the other hand, be unpleasing and rough in style.