Control of the mind consists of control of imaginations, thoughts, emotions and feelings. Emotions are the outcome of thoughts and feelings, the vibrations of which are always ringing in the sphere of the astral plane. The scattered clouds in the sky join and separate, at every moment forming various distinct pictures. In like manner the will- as a magnet - gathers these vibrations in the astral sphere from different directions, forming them accidentally or intentionally into a picture which is either a thought, an imagination, an emotion or a feeling. Just as clouds do not remain unscattered in the sky, so the pictures formed in the astral world are liable quickly to be dispersed, except when the sky is overcast, or when the atmosphere is overwhelmed with depression or joy.