Lecture III

If we are to bring the relationship of Universe, Earth, and Man before our minds in the following lectures, it will first be necessary to gather together many things that will furnish us with some kind of foundation. At the same time we must remember that if we only use our external senses and the intellect that is bound up with these, we shall see very little; this applies to the Earth as well as to man, and in a still higher degree to the Universe. We must realize that the greater part of what is most essential is hidden from the outer senses, and also from external intellectual observation. Therefore to begin with we will point out a few things appertaining to the beings that surround us, but which are hidden from view. Much will have to be said which many of you know already, but in order to grasp our vast subject thoroughly it will be necessary to recapitulate to a certain extent. We must in the first place consider the planet on which we live, and which forms the centre of our studies.