Chapter II: The Nature of Humanity
It is this point that the science of the supersensible distinguishes ‘body’ from ‘soul.’ We speak of the ‘astral body’ so long as we have in mind how the knowledge or awareness of an actually present object comes about, while we designate as ‘soul’ what give the knowledge performance, duration. From this it will be evident how close is the connection of the astral body with the part of the soul which gives permanence to knowledge. In a sense, they may even be said to be united—to constitute a single member of the human being. Hence it is also possible to refer to them jointly as the astral body. Or, if we desire a more exact description, we may call the astral body of man the ‘Soul-Body’ and the soul, is so far as it is united with the astral body, the ‘Sentient Soul.’