The death of the Austrian thinker and mystic Rudolf Steiner in March 1925 marked the end of an extremely important journey of intense and diverse intellectual and spiritual activities, the influence of which has already permeated modern culture. R. Steiner spent several years studying philosophy, positive sciences, literature, and arts. 

At the same time, he offered a volume of significant knowledge of an insightful, philosophical, and spiritual nature. His thoughts were effectively applied in the creation of a new kind of architecture, a new kind of therapeutic method, radical new perceptions and methods in the field of agriculture, radically new and attractive ideas regarding social order, as well as a school with thousands of students based on a new and completely different direction from that of the modern educational system.

These tangible expressions of Rudolf Steiner's genius in the fields of medicine, art, education, agriculture, and social order become even more impressive when we locate them in the "ground" they developed - in his deep spiritual philosophy. Steiner developed his philosophy in dozens of books and thousands of lectures. His teachings contain dozens of new concepts and ideas, and therefore he was forced to create his own vocabulary. This concise encyclopedic dictionary contains concise definitions of many terms and concepts from Steiner's worldview, from the simplest to the most complex and ambiguous. This dictionary can be used as a reference guide, but also as a compass in the multidimensional world of Rudolf Steiner's spiritual ideas and concepts. From a different perspective, anthroposophy can be seen as a new language - a language that can lead us into the world of the spirit.