After a course of lectures in that city he was again forced to spend some time in a hospital with valvular heart trouble. Upon his recovery, still undaunted, he once more took up his work of lecturing in the northwestern part of the United States. In the fall of 1907, during a most successful period of lectures in Minnesota, he travelled to Berlin (Germany) with his friend Dr. Alma Von Brandis, who had been for months trying to persuade him, in order to hear a cycle of lectures by Rudolf Steiner. During his short stay in Germany, he developed a sincere admiration of Steiner, to which "esteemed teacher and valued friend" he dedicated his magnum opus. He sat in on several lectures and had one or two interviews with Steiner and he could learn about occult truth from the founder of later Anthroposophy, but at the same time he understood that this teacher could not help him to advance along the path of spiritual development. Heindel reported that, with his mind already made up to return, feeling that he had given up his work in America in vain to take this trip, he was visited by the vital body of a spiritual being who identified himself as an Elder Brother of the Rosicrucian Order, an Order in the inner worlds formed in the year 1313 and having no direct connection to physical organizations which call themselves by this name. Heindel claimed that the Elder Brother gave him information which was concise and logical and beyond anything he was capable of writing. Later, he found out that during a previous visit of the Elder Brother, he was put to a test to determine his worthiness to be messenger of the Western Wisdom Teachings. He recounts that only then he was given instruction how to reach the etheric Temple of the Rose Cross, near the German/Bohemian border, and how at this Temple he was in direct communication with and under the personal instructions of the Elder Brothers of the Rose Cross. The Rosicrucian Order is described as being composed of twelve Elder Brothers, gathered around a thirteenth who is the invisible Head. These great Adepts, belonging to human evolution but having already advanced far beyond the cycle of rebirth, are reported as being among those exalted Beings who guide mankind's evolution. Further, some help him manifest without necessarily being under any compulsion