"So perfect is the union between them that if there is any serious disturbance in the lower bodies of the pupil it will affect also those of the Master; and, as such vibration would interfere with the Adept’s work on higher planes, when this unfortunately happens he has to drop a veil that shuts the pupil off from himself until such time as the storm settles down. It is of course sad for the pupil when he has to he cut off in this manner; but it is absolutely his own doing, and he can end the separation at once as soon as he can control his thoughts and feelings. Usually such an unfortunate incident does not last longer than forty eight hours; but I have known cases much worse than that, in which the rift endured for years, and even for the remainder of that incarnation. But these are extreme cases, and very rare, for it is little likely that a person capable of such defection would be received as a pupil at all."