In Called by the World Heart, Peter Huijs presents an account of the development of the spiritual pursuits of the
past one and a half century, during which the great spiritual organisations played an important part. In this complex
esoteric field, the Leene brothers Meer...rediscovered the Seventeenth-century manifestoes of the Rosicrucians in 1935. Huijs describes the history of the Rosicrucian society that they founded before World War II. 
The second part of this book describes the period after 1945: The genesis of the Lectorium Rosicrucianum, the international School of the Golden Rosycross. This initiation School is wholly devoted to the liberation of the higher life in the human soul. As an anthology, the author shows the spiritual and literary development of J. Van Rijckenborgh and Catharose de Petri on the basis of extensive quotations. In a natural way, the reader gains insight into the way, in which their inspiration and inner task developed into a sevenfold world work, always inspired by the chain of Universal Brotherhoods. 
The author also presents a survey of the further development undertaken by this school after 1990. In a preview, he describes the development until 2024, during which the spiritual development of the past period may be recognised
and activated in broad sectors of society.