4. The Threshold In Nature and In Man
Now it is well-known that no power on earth can withstand for long the march of progress; and we in these days have to think in an entirely new way about what one may call the “Threshold of the Spiritual World.” Spiritual Science is no “warming up” of Gnostic or other ancient teaching, but works absolutely on the principles of modern natural science, as I think will have been evident from the example we have been considering.
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