To be informed is to know simply that something is the case. To be enlightened is to know, in addition, what it is all about: why it is the case, what its connections are with other facts, in what respects it is the same, in what respects it is different, and so forth. (Location 267)
Enlightenment is achieved only when, in addition to knowing what an author says, you know what he means and why he says it. (Location 272)
The art of reading, in short, includes all of the same skills that are involved in the art of unaided discovery: keenness of observation, readily available memory, range of imagination, and, of course, an intellect trained in analysis and reflection. (Location 311)