" From science, then, if it must be so, let man learn the philosophic truth that there is no material universe; its warp and woof is maya, illusion. Its mirages of reality all break down under analysis. As one by one the reassuring props of a physical cosmos crash beneath him, man dimly perceives his idolatrous reliance, his past transgression of the divine command: “Thou shalt have no other gods before Me.” In his famous equation outlining the equivalence of mass and energy, Einstein proved that the energy in any particle of matter is equal to its mass or weight multiplied by the square of the velocity of light. The release of the atomic energies is brought about through the annihilation of the material particles. The ‘death’ of matter has been the ‘birth’ of an Atomic Age. Light-velocity is a mathematical standard or constant not because there is an absolute value in 186,000 miles a second, but because no material body, whose mass increases with its velocity, can ever attain the velocity of light. Stated another way: only a material body whose mass is infinite could equal the velocity of light. This conception brings us to the law of miracles. The masters who are able to materialise and dematerialise their bodies or any other object and to move with the velocity of light, and to utilise 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. "
― Paramahansa Yogananda , Autobiography of a Yogi