"The atom is now being studied along a newer line... Much of the earlier teaching of physical science has been revolutionised by the discovery of radium, and the more scientists find out, the more it becomes apparent (as they themselves realise), that we are standing on the threshold of very great discoveries, and are on the eve of profound revelations. In the human being, as he evolves and develops, these two stages can equally be seen. There is the early or atomic stage, in which a man's whole centre of interest lies within himself, within his own sphere, where self-centredness is the law of his being, a necessary protective stage of evolution. He is purely selfish, and concerned primarily with his own affairs. This is succeeded by a later stage, in which a man's consciousness begins to expand, his interests begin to lie outside his own particular sphere, and the period arrives in which he is feeling for the group to which he belongs. This stage might be viewed as corresponding to that of radio-activity. He is now not only a self-centred life, but he is also beginning to have a definite effect upon his surroundings. He is turning his attention from his own personal selfish life, and is seeking his greater centre. From being simply an atom he is, in his turn, becoming an electron, and coming under the influence of the great central Life which holds him within the sphere of Its influence."