The Kybalion: Hermetic Philosophy is a 1908 book claiming to be the essence of the teachings of Hermes Trismegistus, published anonymously by a group or person under the pseudonym of "the Three Initiates".
Mental Transmutation (also described as Mental Alchemy, the Art of Mental Chemistry, and the Art of Polarization) refers to the art of changing and transforming one's own mental states and conditions, as well as influencing those of others. It is also called a form of "Mystic Psychology".
Principle of Mentalism
The Principle of Mentalism embodies the truth that "All is Mind."
Principle of Correspondence
The Principle of Correspondence embodies the idea that there is always a correspondence between the laws of phenomena of the various "planes" of being and life. As above, so below; as below, so above. This principle states that there is a harmony, agreement and correspondence between the Physical, Mental, Emotional, and Spiritual planes.
Principle of Vibration
The Principle of Vibration embodies the idea that motion is manifest in everything in the Universe, that nothing rests, and everything moves, vibrates, and circles. This principle explains that the differences between different manifestations of Matter, Energy, Mind, and even Spirit, are the result of only different "vibrations". The higher a person is on the scale, the higher the rate of vibration will be. Here, The All is purported to be at an infinite level of vibration, almost to the point of being at rest. There are said to be millions upon millions of varying degrees between the highest level, The All, and the objects of the lowest vibration.
Mental Transmutation is described as the practical application of this principle. To change one's mental state is to change vibration. One may do this by an effort of Will, by means of deliberately "fixing the attention" upon a more desirable state.
Principle of Polarity
The Principle of Polarity embodies the idea that everything is dual, everything has two poles, and everything has its opposite. All manifested things have two sides, two aspects, or two poles. Everything "is" and "isn't" at the same time, all truths are but half truths and every truth is half false, there are two sides to everything, opposites are identical in nature, yet different in degree, extremes meet, and all paradoxes may be reconciled.
Principle of Rhythm
The Principle of Rhythm embodies the idea that in everything there is manifested a measured motion, a to and fro, a flow and inflow, a swing backward and forward, a pendulum-like movement. This principle explains that there is rhythm between every pair of opposites, or poles, and is closely related to the Principle of Polarity. It can be seen that this Principle enables transition from one pole to the other, and not necessarily poles of extreme opposites.
Principle of Cause and Effect
The Principle of Cause and Effect explains that there is a cause for every effect, and an effect for every cause. It also states that there is no such thing as chance, that chance is merely a term indicating extant causes not recognized or perceived. The Principle is clarified in the chapter Causation.
Principle of Gender
The Principle of Gender embodies the idea that gender is manifested in everything. The authors state that this does not relate explicitly to the commonly understood notion of sex, but rather "... to beget; to procreate, to generate, to create, or to produce..." in general. Gender is manifested as the Masculine and Feminine principles, and manifests itself on all planes.