Because communication involves the simultaneous exercise of logic, grammar, and rhetoric, these three arts are the fundamental arts of education, of teaching, and of being taught. Accordingly, they must be practiced simultaneously by both teacher and pupil. The pupil must cooperate with the teacher; he must be active, not passive. The teacher may be present either directly or indirectly. When one studies a book, the author is a teacher indirectly present through the book. Communication, as the etymology of the word signifies, results in something possessed in common; it is a oneness shared. Communication takes place only when two minds meet.
–Sister Miriam Joseph, C.S.C., PhD. The Trivium: The Liberal Arts of Logic, Grammar, and Rhetoric, Understanding the Nature and Function of Language, p. 7