So, as you see, in order to be successful in influencing the minds of others by means of mental induction, you must first cultivate a strong feeling of interest in the idea which you wish to induce in the other person, or a strong desire to produce the thing. Interest and desire constitute the fire which generates the stream of will from the water of mind, as some occultists have stated it. Secondly, you must cultivate the faculty of forming strong and clear mental images of the idea or feeling you wish to so induce; you must learn to actually "see" the thing in your imagination, so as to give the idea strength and clearness. Thirdly, you must learn to concentrate your mind and attention upon the idea or feeling, shutting out all other ideas and feelings for the time being; thus you give concentrated force and power to the vibrations and thought-forms which you are projecting. These three principles underlie all of the many forms of mental induction, or mental influence. We find them in active operation in cases in which the person is seeking to attract to himself certain conditions, environment, persons, things, or channels of expression, by setting into motion the great laws of mental attraction. We see them also employed when the person is endeavoring to produce an effect upon the mind of some particular person, or number of persons. We see them in force in all cases of mental or psychic healing, under whatever form it may be employed. In short, these are general principles, and must therefore underlie all forms and phases of mental or psychic influence. The sooner the student realizes this fact, and the more actively does he set himself to work in cultivating and developing these principles within himself, the more successful and efficient will he become in this field of psychic research and investigation. It is largely in the degree of the cultivation of these three mental principles that the occultist is distinguished from the ordinary man. It may be that you are not desirous of cultivating or practicing the power of influencing other persons psychically. Well, that is for you to decide for yourself. At any rate, you will do well to develop yourselves along these lines, at least for self-protection. The cultivation of these three mental principles will tend to make you active and positive, psychically, as contrasted with the passive, negative mental state of the average person. By becoming mentally active and positive you will be able to resist any psychic influence that may be directed toward yourself, and to surround yourself with a protective aura of positive, active mental vibrations.