his reason in its contemplative aspect with Saturn and in its social aspect with Jupiter, (and) as to his irrational part, the passionate nature with Mars, the eloquent with Mercury, the appetitive with Venus, the sensitive with the Sun and the vegetative with the Moon. Such doctrines were commonplace in mystery-schools and Hermetic and gnostic sects throughout the Roman Empire and influenced the early Christian church. Among Muslims the "astral" world-view was soon rendered orthodox by Quranic references to the Prophet's ascent through the seven heavens. Scholars took up the Greek Neoplatonist accounts as well as similar material in Hindu and Zoroastrian texts. The expositions of Ibn Sina (Avicenna), the Brotherhood of Purity and others, when translated into Latin in the Norman era, were to have a profound effect upon European mediaeval alchemy and astrology. By the 14th century Dante was describing his own imaginary journey through the astral spheres of Paradise. Throughout the Renaissance, philosophers, Paracelsians, Rosicrucians and alchemists continued to discuss the nature of the astral world intermediate between earth and the divine. Once the telescope established that no spiritual heaven was visible around the solar system, the idea was superseded in mainstream science. The astral plane and astral experience According to occult teachings the astral plane can be visited consciously through astral projection, meditation and mantra, near death experience, lucid dreaming, or other means. Individuals that are trained in the use of the astral vehicle can separate their consciousness in the astral vehicle from the physical body at will. The first stage in development, according to Ramacharaka, is "mastery of the physical body and its care and attention", which pertains not only to the physical body but also to its double in the astral. In addition, one must spend time tuning the "instinctive mind". The first three subdivisions of the instinctive mind are passions, desires, and lusts. The second stage is the intellect, otherwise known as the sharpening of the mind. Someone operating largely out of the instinctive mind would "have only a glimmering of intellect", therefore those who are centered in the intellect would only have an inkling of the spiritual. Once both stages are completed the spiritual mind can be awakened. In early theosophical literature the term "astral" may refer to the aether. Later theosophical authors such as Annie Besant and C. W. Leadbeater make the astral finer than the etheric plane but "denser" than