Angel's declared purpose is to “demystify” mysticism by approaching it as we do ordinary phenomena, and his eventual conclusion is that mystical experiences are very similar to some of our everyday experiences. To demonstrate that, he provides us with three closely-argued chapters on, successively, the typology of mysticism, the reasons for mystical silence, and the relationship of mysticism to other experiences. Ultimately, he claims that mysticism need not be mysterious because all of us have quasi-mystical experiences.

Aristotle's explanation of the “active intellect” inDe AnimaIII, 5 constitutes a problem for us simply because we have to take this philosopher so seriously. If he were a writer given to poetic lapses or mythical adornments to his work we could consider dismissing the whole chapter as unessential. However, we know that Aristotle does not write unessential chapters, and that he is invariably engaged in an attempt to explain his subject fully and systematically, neither adding to it nor leaving anything (...) out.TheDe Anima, for example, is an attempt to describe the characteristics of living things, in an ascending order from the basic functions of vegetables to the most abstract thinking by human beings. The activities of nutrition, sensation, common sense, imagination, and movement are presented in Book II and in the early part of Book III. (shrink)