So it is with the mind. For the mystic who has developed enough to do it rightly, it is a simple task to take the reflection of the mind of another, or to throw the reflection of his own mind on the mind of another. The former is called thought-reading, the latter is called mental suggestion; and by developing this power a person can communicate not only with the living, but even with spirits. The question is who should do so and who should not do so. If it is not advisable for a little child to go in a crowd, that does not mean that the same should be applied to a grown-up person. Therefore the unselfish and wise may learn this in order to make the best use of this attainment.