the thought expresses itself as an oscillation of the matter of a certain
part of the mental body. This rate of oscillation communicates itself to
the surrounding mental matter precisely in the same way as the vibration of
a bell communicates itself to the surrounding air.

This radiation travels out in all directions, and whenever it impinges upon
another mental body in a passive or receptive condition it communicates to
it something of its own vibration. This does not convey a definite complete
idea, as does the thought-form, but it tends to produce a thought of the
same character as itself. For example, if the thought be devotional its
undulations will excite devotion, but the object of the worship may be
different in the case of each person upon whose mental body they impinge.
The thought-form, on the other hand, can reach only one person, but will
convey to that person (if receptive) not only a general devotional feeling,
but also a precise image of the Being for whom the adoration was originally
felt.

Any person who habitually thinks pure, good and strong thoughts is
utilizing for that purpose the higher part of his mental body--a part which
is not used at all by the ordinary man, and is entirely undeveloped in him.
Such an one is therefore a power for good in the world, and is being of
great use to all those of his neighbours who are capable of any sort of
response. For the vibration which he sends out tends to arouse a new and
higher part of their mental bodies, and consequently to open before them
altogether new fields of thought.

It may not be exactly the same thought as that sent out, but it is of the
same nature. The undulations generated by a man thinking of Theosophy do
not necessarily communicate Theosophical ideas to all those around him; but
they do awaken in them more liberal and higher thought than that to which