Much complementary and additional matter has been inserted in this edition in the part dealing with “Perception of the Higher Worlds.” The endeavour has been made to represent in a graphic way the kind of inner soul-processes by which the power of cognition liberates itself from the limits which confine it in the world of sense and thereby becomes qualified for experiencing the supersensible world. The attempt has been made to show that these experiences, even though gained by entirely inner ways and methods, still do not have a merely subjective significance for the particular individual who gains them. The description attempts to show that _within_ the soul stripped of its individuality and personal peculiarities, an experience takes place which _every_ human being may have in the same way, if he will only work at his development from out his subjective experiences. It is only when “knowledge of supersensible worlds” is thought of as bearing this character that it may be differentiated from old experiences of merely subjective mysticism. Of this mysticism it may be said that it is after all more or less a subjective concern of the mystic. The scientific spiritual training of the soul, however, as it is described here, strives for objective experiences, the truth of which, although recognized in an entirely inner way, may yet, for that very reason, be found to be universally valid. This again is a point on which it is very difficult to come to an understanding concerning many of the habits of thought of our time. In conclusion, the author would like to observe that it would be well if even the sympathetic reader of the book would take its statements exactly as they stand. At the present time there is a very prevalent tendency to give this or that spiritual movement an historical name, and to many it is only such a name that seems to make it valuable. But, it may be asked, what would the statements in this book gain by being designated “Rosicrucian,” or anything else of the kind? What is of importance is that in this book a glimpse into supersensible worlds is attempted with the means which in our present period of evolution are possible and suitable for the human soul; and that from this point of view the problems of human destiny and human existence are considered beyond the limits of birth and death. It is not a question of an endeavor which shall bear this or that old name, but of a striving after truth.