The masters who are able to materialize and dematerialize their bodies or any other object, and to move with the velocity of light, and to utilize the creative light-rays in bringing into instant visibility any physical manifestation, have fulfilled the necessary Einsteinian condition: their mass is infinite. The consciousness of a perfected yogi is effortlessly identified, not with a narrow body, but with the universal structure. Gravitation, whether the “force” of Newton or the Einsteinian “manifestation of inertia,” is powerless to COMPEL a master to exhibit the property of “weight” which is the distinguishing gravitational condition of all material objects. He who knows himself as the omnipresent Spirit is subject no longer to the rigidities of a body in time and space. Their imprisoning “rings-pass-not” have yielded to the solvent: “I am He.” “Fiat lux! And there was light.” God’s first command to His ordered creation (GENESIS 1:3) brought into being the only atomic reality: light. On the beams of this immaterial medium occur all divine manifestations. Devotees of every age testify to the appearance of God as flame and light. “The King of kings, and Lord of lords; who only hath immortality, dwelling in the light which no man can approach unto.” {FN30-5} A yogi who through perfect meditation has merged his consciousness with the Creator perceives the cosmical essence as light; to him there is no difference between the light rays composing water and the light rays composing land. Free from matter-consciousness, free from the three dimensions of space and the fourth dimension of time, a master transfers his body of light with equal ease over the light rays of earth, water, fire, or air. Long concentration on the liberating spiritual eye has enabled the yogi to destroy all delusions concerning matter and its gravitational weight; thenceforth he sees the universe as an essentially undifferentiated mass of light. “Optical images,” Dr. L. T. Troland of Harvard tells us, “are built up on the same principle as the ordinary ‘half-tone’ engravings; that is, they are made up of minute dottings or stripplings far too small to be detected by the eye. . . . The sensitiveness of the retina is so great that a visual sensation can be produced by relatively few Quanta of the right kind of light.” Through a master’s divine knowledge of light phenomena, he can instantly project into perceptible manifestation the ubiquitous light atoms. The actual form of the projection-whether it be a tree, a medicine, a human body-is in conformance with a yogi’s powers of will and of visualization.