Knowledge of the Higher Worlds and its Attainment is a publication authored by Rudolf Steiner. This title focuses on Steiner's belief of the importance of studying and understanding higher worlds and includes on how to attain knowledge from higher worlds, esoteric training, transforming dream life, consciousness and spiritual training. This is an excellent book for those who are interested in such studies as outlined above and also for those who are interested in the beliefs and new age ideas made popular in the early 20th century by Rudolf Steiner.