The individual mind, although it appears to be segregated, resides in a sea of minds, all present right here and right now. It is always influencing other minds and is being influenced by them. Supernatural influences are the ones, where the source is nonphysical. Its always our own tendencies that allow, other minds to influence us. Since a mind cannot remain unaffected by influences, it is useful to know which influences are beneficial for us, and which ones are not.
The polarity is not static, the poles are reversed sooner or later. Everything has highs and lows, a rhythm. A Master understands this law and neutralizes it by staying steady amidst the flow of polarities. Nothing is uncaused and everything has an effect. One can remain unaffected by consequences by acting with awareness, and thus can rise above the law of cause and effect.
Everything exists as vibrations. The mental phenomena are just higher vibrations compared to the material. Understanding of vibrations brings powers. Everything has opposites, and they are simply different degrees of the same thing, appearing as two poles of it. This understanding enables us, to transmute that thing, into something of a higher vibration. The most important application of which, is transmutation of our own mind.
The planes of existence are experiences of various vibratory states of the ALL. Entities find themselves in one or the other vibratory plane, depending on their level of evolution. Higher the rate of vibration, higher is the level of evolution. There is a huge continuous spectrum of vibrations, which can be divided into arbitrary planes or dimensions for the purpose of study.
Mentalism does not mean a denial of life, nor does it mean reigning over the world of illusions. A Master simply rises above the material world, fully respecting the laws of the matter. The ALL descends in vibration and creates mental forms, and then it ascends and dissolves everything back into itself. The creation and the creator are One. This play happens for no reason, it just is.