II. Introductory Explanations Concerning the Nature of Man
Now imagine these examples applied to the density of substance. At first you will have the three generally known aggregate conditions: the solid, liquid and gaseous conditions; but in accordance with the above-mentioned example of the property, you should not remain by these three conditions. Even as it is possible to dilute the property into a “negative” property, so the substance can also become thinner and thinner, more and more diluted, beyond the gaseous stage. Imagine therefore a kind of substance opposed to the physical substance; this will give you a kind of idea of that which constitutes the etheric body.
Read this passage in another edition
DEoriginalENEnglish