The greatest complaint of the Spanish mystics St. Teresa of Avila and St. John of the Cross, was that they lacked a spiritual guide to lead them along the right paths and enable them to distinguish between creative and destructive spirits. We hardly need emphasize how dangerous the experimentation with the interior life can be. Drugs, as well as different concentration practices and withdrawal into the self, often do more harm than good. On the other hand it also is becoming obvious that those who avoid the painful encounter with the unseen are doomed to live a supercilious, boring, and
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