This much, however, implies that the reasons in question point to a certain attitude as the only right one for an occult scientist. He avoids, as much as he possibly can, any kind of outer defence or conflict, and lets the cause speak for itself. He simply puts forward occult science; and in what it has to say about various matters, he shows how his knowledge is related to other departments of life and science, what antagonism it may encounter, and in what way reality stands witness to the truth of his cognitions. He knows that an attempted vindication would,—not merely on account of current defective thinking but by virtue of a certain inner necessity,—lead into the domain of artful persuasion; and he desires nothing else than to let occult science work its own way quite independently. The first point in occult science is by no means the advancing of assertions or opinions which are to be proven, but the communication, in a purely narrative form, of experiences which are to be met with in a world other than the one that is to be seen with physical eyes and touched with physical hands. And further, it is an important point that through this science the methods are described by which man may verify for himself the truth of such communications. For one who makes a serious study of genuine occult science will soon find that thereby much becomes changed in the conceptions and ideas which are formed—and rightly formed—in other spheres of life. A wholly new conception necessarily arises also about what has hitherto been called a “proof.” We come to see that in certain domains such a word loses its usual meaning, and that there are other grounds for insight and understanding than “proofs” of this kind. All occult science is born from two thoughts, which may take root in any human being. To the occult scientist these thoughts express facts which may be experienced if the right methods for the purpose are used. But to many people these same thoughts represent highly disputable assertions, which may arouse fierce contention, even if they are not regarded as something which may be “proven” impossible. These two thoughts are, first, that behind the visible world there is another, the world invisible, which is hidden from the senses and also from thought that is fettered by these senses; and secondly, that it is possible for man to penetrate into that unseen world by developing certain faculties dormant within him. Some will say that there is no such hidden world. The world perceived by man through his senses is the only one. Its enigmas can be solved out of itself. Even if man is still very far from being able to answer all the questions of existence, the time will certainly come when sense-experience and the science based upon it will be able to give the answers to all such questions.