These radiating vibrations, like all others in nature, become less
powerful in proportion to the distance from their source, though it is
probable that the variation is in proportion to the cube of the distance
instead of to the square, because of the additional dimension involved.
Again, like all other vibrations, these tend to reproduce themselves
whenever opportunity is offered to them; and so whenever they strike
upon another mental body they tend to provoke in it their own rate of
motion. That is--from the point of view of the man whose mental body is
touched by these waves--they tend to produce in his mind thoughts of the
same type as that which had previously arisen in the mind of the thinker
who sent forth the waves. The distance to which such thought-waves
penetrate, and the force and persistency with which they impinge upon
the mental bodies of others, depend upon the strength and clearness of
the original thought. In this way the thinker is in the same position as
the speaker. The voice of the latter sets in motion waves of sound in
the air which radiate from him in all directions, and convey his message
to all those who are within hearing, and the distance to which his voice
can penetrate depends upon its power and upon the clearness of his
enunciation. In just the same way the forceful thought will carry very
much further than the weak and undecided thought; but clearness and
definiteness are of even greater importance than strength. Again, just
as the speaker's voice may fall upon heedless ears where men are already
engaged in business or in pleasure, so may a mighty wave of thought
sweep past without affecting the mind of the man, if he be already
deeply engrossed in some other line of thought.

It should be understood that this radiating vibration conveys the
character of the thought, but not its subject. If a Hindu sits rapt in
devotion to Krishna, the waves of feeling which pour forth from him