IN this book I have ventured to write of that which may be called 'non-rational' or 'suprarational In the depths of the divine nature. I do not thereby want to promote in any way the tendency of our time towards an extravagant and fantastic irrationalism but rather to join issue with it in its morbid form. The irrational' is today a favourite theme of all who are too lazy to think or too ready to evade the arduous duty of clarifying their ideas and grounding their convictions on a basis of coherent thought. This book, recognizing the profound import Of the non-rational for meta physic, makes a serious attempt to analyse all the more exactly the feeling which remains where the concept fails, and to introduce a terminology which is not any the more loose or indeterminate for having necessarily to make use of symbols.