<p><strong>'For those who know Bohm's work only through </strong><em>Wholeness and the Implicate Order</em><strong> then this is a fine primer. For those who want a well written, authoritative and stimulating understanding of the subject matter of causality and quantum physics then the reappearance of this work will provide them with the best.'</strong> - <em>Michael Shallis, New Scientist</em><br /><br /><strong>'Of exceptional importance. A genuine philosophy of nature, written by a physicist, it transcends the present interpretation of quantum mechanics and formulates a most stimulating hypothesis. A brilliant original elaboration of Prince Louis de Broglie's ideas.'</strong> - <em>Hibbert Journal</em></p>