The physical body as it is now is not sensitive enough to respond to subtle vibrations.  Its brain is not capable of receiving and registering the delicate vibrations sent outward by the ego, and the task of changing it so that it can do so is not a trifling or easy one.  But every effort produces its effect and to the persistent and patient devotee of self-development the final result is certain.  But it is not a matter of miraculous accomplishment.  It is a process of inner growth.  There are, it is quite true, cases in which people who have entered upon this method of self-development have, in a short time, attained spiritual illumination, becoming fully conscious of the invisible world and its inhabitants while awake in the physical body; extending the horizon of consciousness to include both worlds, and coming into possession of the higher clairvoyance that enables one to trace past causes and modify impending effects.  But such people are those who have given so much attention to self-development in past lives that they have now but little more to do in order to come into full possession of occult powers.  Sometimes it requires little more than the turning of their attention to the matter.  Becoming a member of the Theosophical Society or seriously taking up theosophical studies is sometimes the final step that leads to the opening of the inner sight.

But how can one know to what point he may have advanced in the past and where he now stands?  How may we know whether there is but a little work ahead or a great deal?  We cannot know; nor is it important to know.  The person who should take up the task merely because he thinks there is little to do would certainly fail.  The very fact that he would not venture upon the undertaking if he thought the task a difficult one is evidence that he has not the qualifications necessary for the success of the occult student.  Unless he is filled with a longing to possess greater power to be used in the service of humanity, and fired with an enthusiasm that would hesitate at no difficulties, he has not yet reached the point in his evolution where he awaits only the final steps that will make him a disciple.  But even the absence of the keen desire for spiritual progress, which is the best evidence of the probability of success, should not deter anybody from entering upon the systematic study of theosophy and devoting to it all the time and energy he can; nor should the thought that many years might pass without producing any very remarkable results lead him to conclude that the undertaking would not be a profitable one.  The time will come with each human being when he will step out of the great throng that drifts with the tide and enter upon the course of conscious evolution, assisting nature instead of ignoring her beneficent plan; and since it is but a question of time the sooner a beginning is made the better, for the sooner will suffering cease.