Thought-dynamics in Universal Environs
Thought actually leaves the brain and hovers about. When a thought, whether good or evil, leaves the mind of a person it gives rise to vibrations in the Manas or mental atmosphere, which travel far and wide in all directions.
It enters the brains of others also. A sage living in a Himalayan cave transmits a powerful thought to a corner of America. He who tries to purify himself in a cave, really purifies the world, helps the world at large. Nobody can prevent his pure thoughts coming out and passing on to those others that really want them.
Just as the sun goes on continuously converting into vapour every drop of water that is on the surface of the earth and just as all the vapour thus rising up gathers together in the form of clouds, all the thoughts that you project from your own lonely corner will mount up and be wafted across space, join similar thoughts projected by those who are like you and, in the end, all these holy thoughts will come down with tremendous force to subjugate undesirable forces.
~ Sri Swami Sivananda, Thought Power