The highest possibilities of imaginative cognition can be realized by supporting the aforesaid meditations by that which one might call “sense-free” thinking. Now when we formulate an idea based upon observations made in the physical sense-world, our thought is not free from sense-impressions. Yet it is not as though man could formulate only such ideas: human thought need not become void and meaningless simply because it is not filled with observations derived through the channels of the senses. The most direct and the safest way for the occult student to acquire this “sense-free” thinking, is to make the facts of the higher worlds presented by occult science, the subject of his thoughts. These facts cannot be observed by means of the physical senses; nevertheless, the student will find that he will be able to grasp them—if only he has enough patience and perseverance. No one can explore higher worlds, or make his own observations therein, without having been trained. But it is quite possible without training to understand everything which investigators communicate about those regions. Should anyone ask, “How can I accept on trust what the occultist tells me, being myself as yet unable to see it?”—such an objection would be groundless, for it is perfectly possible to arrive through mere reflective thinking at the sure conviction that the matters thus communicated are true. If a man is unable, through reflecting, to arrive at such a conviction, the reason is not that he cannot possibly “believe” something he cannot see, but simply because he has not as yet applied his powers of reflective thinking in a sufficiently unbiased, comprehensive and profound manner. In order to be clear on this point, it must be borne in mind that human thought, if it arouses itself to energetic activity, can understand more than it usually imagines possible. For in thought there is an inner essence which is in connection with the supersensible world. The soul is not usually conscious of this connection, because it is wont to train its faculty of thought only through the world of sense. On this account it thinks incomprehensible what is imparted to it from the supersensible world. What is thus communicated is, however, not only intelligible to thought which has been spiritually trained, but to any thinking which is fully conscious of its power and is willing to make use of it.