As the twentieth century progressed Steiner foretold that humanity would begin to experience a longing for forms of experience that transcended intellectual and materialistic thinking. A hundred years after its initial publication in 1904, there are countless ways to achieve such experience-Eastern forms of meditation, channeling, remote viewing, and astral projection, to mention a few. There has also been huge increase in people reporting various kinds of suprasensory perceptions, such as near-death experiences and encounters with angelic beings.
In this context, Steiner's key spiritual workbook-reproduced here in the classic Osmond-Davy translation-is needed more than ever, given its unique, precise instructions for inner training, its protective exercises, and its indications for grounding and centering. Knowledge of the Higher Worlds begins with the conditions required for personal development, and guides us through the stages of initiation, its practical aspects, and its effects.