I. Occult Science and Occult Development
The first of these powers is that of thinking. We live in relation with the world around us by forming thoughts about our surroundings. In ordinary, everyday life a man thinks thoughts which are caused through impressions made on the senses, or through the intellect that is bound up with the brain. In my book Knowledge of the Higher Worlds and its Attainment it is said that through meditation, concentration and contemplation, through strengthening his life of soul, a man can make this power of thinking independent of external life. I want to call your attention here to how the power of thinking within the soul, which otherwise is developed only through thought about the external world, can be made essentially free and independent of everything belonging to the body. That is to say, through such development it becomes possible for the soul to think, to form thoughts within itself, without using the brain as an instrument. This is easy to understand if we consider the chief characteristic of ordinary, everyday thinking which is dependent upon the impressions conveyed through the senses.