Evelyn Underhill was one of the greatest spiritual writers of the twentieth century. For her, true mysticism is, first of all, active and practical, an organic life process in which the whole self is engaged, rather than simply an intellectual apprehension. Jan van Ruysbroeck is thought to be the greatest of all the medieval Catholic mystics. Evelyn Underhill is, therefore, doing lovers not only of Catholic mysticism, but also of mysticism in general, a very real service by her monograph, which deals more satisfactorily than any existing work in English with the life and teachings of one of the most spiritual minds in Christendom. Her book is not simply a painstaking summary of the more patent generalities of the subject, but rather a deeply sympathetic entering into the mind of Ruysbroeck, and that, too, with no common insight. This edition contains a bibliographical note and complete footnotes. Excerpt: 'In the history of the spiritual adventures of man, we find at intervals certain
