Lecture Four

Where the Sun is, is emptier than empty space. This can be said of all parts of the Universe where we find Ether. For this reason it is so difficult for the physicist to speak of Ether, for he thinks that Ether is also matter, though more rarefied than ordinary matter. Materialism is still very busy with this perpetual ‘rarefying’, both the materialism of natural science as well as the materialism of Theosophy. It distinguishes first, dense matter; then etheric matter—more rarefied; then astral matter—still more rarefied; and then there is the ‘mental’ and I do not know what else—always more and more rarefied!