Every mind , or brain, is directly connected by every other brain by means of the ether. Every thought released by any brain maybe instantly picked up and interpreted by all other brains that are "en rapport" with the sending brain.
It is the belief of this author that every thought vibration released by any brain is picked up by the ether and kept is motion in circuitous wavelength corresponding in length to the intensity of the energy used in their release; that they are one of the two sources from which thoughts would "pop" into one's mind emanate, the other source being direct and immediate contact through the ether with the brain releasing the thought vibration.
It is the author's belief that the mind is made up of the same universal "fluid" energy as that which constitutes the ether which fills the universe. It is a fact as well known to the layman as to the man of scientific investigation, that some minds clash the moment the come in contact with each other, while other minds show a natural affinity for each other. Between the two extremes of natural antagonism and natural affinity growing out of the meeting or contacting of minds there is a wide range of possibility for varying reactions of mind upon mind.
Some minds are so naturally adapted to each other that "love at first site" is the inevitable outcome of the contact. Who has not known of such an experience? In other case minds are so antagonistic that violent mutual dislike shows at first meeting. The results occur without a word being spoken, and without the slightest signs of any of the usual causes for love and hate acting as stimulus.

An extract from "Law of Success" by Napoleon Hill.