The Rosicrucian Cosmoconception is a fundamental work that contains a comprehensive description of the evolutionary processes occurring in man and in the universe, connecting science and religion. The book is distinguished by clarity, logic and concreteness of presentation. The first part is a treatise on the visible and invisible worlds, on man and the method of evolution, on rebirth and the law of cause and effect. The second part examines the evolution of the universe and the evolution of the Solar system. The third part talks about Christ and His mission, about the future development of man and initiation, about esoteric training and a safe method of obtaining first-hand knowledge. The book provides basic exercises of the Rosicrucians - retrospection and concentration, and also highlights approaches to the development of spiritual vision, allowing one to penetrate into the memory of Nature and interact with subtle intangible manifestations of existence. In general, the book allows the interested reader to form, on the basis of this holistic concept, his own spiritual worldview, which is practically correlated with everyday life, allowing him to live a full life and develop correctly, adhering to the spiritual guidelines set out in the book.