You can't be a philosopher and an activist. If you do, you get all mixed up. - Mortimer J. Adler

Montaigne speaks of an “Abecedarian” ignorance that precedes knowledge, and a doctoral ignorance that comes after it. The first is the ignorance of those who, not knowing their A-B-C’s, cannot read at all. The second is the ignorance of those who have misread many books. They are, as Alexander Pope rightly calls them, “bookful blockheads, ignorantly read.” There have always been literate ignoramuses, who have read too widely, and not well. The Greeks had a name for such a mixture of learning and folly which might be applied to the bookish but poorly read of all ages. They are all “sophomores.”

It is obvious that teaching is a very special art, sharing with only two other arts, agriculture and medicine, an exceptionally important characteristic A doctor may do many things for his patient, but in the final analysis, it is the patient himself who must get well, grow in health. The farmer does many things for his plants or animals, but in the final analysis, it is they that must grow in size and excellence. Similarly, although the teacher may help his student in many ways, it is the student himself who must do the learning. Knowledge must grow in his mind if learning is to take place.

An educated person is one who, through the travail of his own life, has assimilated the ideas that make him representative of his culture.