Solitude can be used well by very few people. They who do must have a knowledge of the world to see the foolishness of it, and enough virtue to despise all the vanity.

Here, class attendance is expected and students are required to take notes, which they are tested on. What is missing, it seems to me, is the use of knowledge, the practical training.

Belief and knowledge are considered to be two different things. But they are not.