The secret to inner harmony can be uncovered in "Quietism, Dynamic Passivity and the Void", yet what is the essential difference between these three concepts? Within a highly original and wide-ranging discussion of the concept of Quietism and its divergents, Trevor Boiling investigates a profoundly metaphysical concept, whose precise definition has eluded scholars. Implied in any study of Quietism are the problematic notions of spiritual peace, power and passivity, which are subsumed by the author under his own concept of 'dynamic passivity', the central concern of the study. Boiling does this by asserting the essentially dynamic passivity of Quietism's central text, the "Spiritual Guide" by the 'Father of Quietism', Miguel de Molinos. Molinos is shown to be the heir to the vibrant mystical tradition of John of the Cross and Teresa of Avila. Additionally, the author presents a penetrating analysis of Molinos' concept of the Void (nada), which is very similar to that of Taoists and Buddhists. This impressively detailed study makes an ideal companion to Dr Boiling's new translation of "The Spiritual Guide" by Miguel de Molinos, to be published by The Lutterworth Press. The author: Trevor Boiling took his doctorate at Birmingham University on the "Spiritual Guide" of Miguel de Molinos. He has spent his working life as a lecturer in languages in various colleges of further and higher education. He is married with a grown-up daughter.