This Principle embodies the truth that "everything is in motion";"everything vibrates"; "nothing is at rest"; facts which Modern Science endorses,and which each new scientific discovery tends to verify. And yet this HermeticPrinciple was enunciated thousands of years ago, by the Masters of AncientEgypt. This Principle explains that the differences between different manifestationsof Matter, Energy, Mind, and even Spirit, result largely from varying ratesof Vibration. From THE ALL, which is Pure Spirit, down to the grossest formof Matter, all is in vibration--the higher the vibration, the higher theposition in the scale. The vibration of Spirit is at such an infinite rateof intensity and rapidity that it is practically at rest-just as a rapidlymoving wheel seems to be motionless. And at the other end of the scale, thereare gross forms of matter whose vibrations are so low as to seem at rest.Between these poles, there are millions upon millions of varying degreesof vibration. From corpuscle and electron, atom and molecule, to worlds anduniverses, everything is in vibratory motion. This is also true on the planesof energy and force (which are but varying degrees of vibration); and alsoon the mental planes (whose states depend upon vibrations); and even on tothe spiritual planes. An understanding of this Principle, with the appropriateformulas, enables Hermetic students to control their own mental vibrationsas well as those of others. The Masters also apply this Principle to theconquering of Natural phenomena, in various ways. "He who understands thePrinciple of Vibration, has grasped the sceptre of power," says one of theold writers.