Further and further the condensation of the earth now proceeds and at the same time the differentiation of the various parts of man, as has been described, becomes more and more defined. From a definite point of evolution onward, the earth is so far condensed that only part of it is fiery; another part has assumed a substantial shape, which may be termed “gas” or “air.” A change also takes place now in man. He is not only brought into contact with the heat of the earth, but the air substance is incorporated in his fire-body. And as heat kindled life in him, the air playing around him creates an effect within him which may be called (spiritual) sound. His etheric body begins to resound. Simultaneously, a part of the astral body becomes separated from the remainder; this part is the germ of the intellectual-soul which appears later. In order to bring before our eyes what takes place in the human soul at this time, we must notice that the beings superior to man are surging through the airy-fiery body of the earth. In the fire-earth it is at first the Sons of Personality who are of importance to man, and when man is stirred into life by the heat of the earth his sentient soul says to itself, “These are the Sons of Personality.” In the same way the beings called “Archangels” earlier in this book (in accordance with Christian esotericism) appear in the air-sphere. It is their influences which man feels within him as sound, when the air plays around him. And the intellectual-soul then says to itself, “These are the Archangels.” Thus what man at this stage perceives, through his connection with the earth, is not as yet a collection of physical objects, but he lives in sensations of heat which rise up to him, and in sounds; in those heat currents and sound waves, however, he feels the Sons of Personality and the Archangels. It is true that he cannot perceive those beings directly, only, as it were, through a veil of heat and sound. While these perceptions are penetrating from the earth into his soul, there continue to ascend and descend within it the images of those higher beings in whose tender care he feels himself to be.