Nature lives in us when we take hold of her completely

Rudolf Steiner: 

"We must come to understand our inner connection with the cosmos, of us as a part of the cosmos; our vibrations must harmonize with the rhythmic movements of the cosmos.  Injustice and sin are nothing more than disharmony when our irregular vibrations cause interruptions and disturbances in the lawful progress of cosmic happenings. The more we feel ourselves at one with the cosmos, the more will it reveal to us. The only spirit to speak to us will be the one we have come to understand. We can know only a part of the great, eternal truth to the same extent that we have manifested greatness and wide range in our own karma, through our activity. This wide range, the sphere of our earthly activity, is increased life after life in our path of evolution; we progress in knowledge and capability, for our destiny is gradually to take up into ourselves the entire conceptual content of our world, our cosmos. We could never do that without a step-by-step experiencing within ourselves of the entire wealth of the world of appearances. Nature lives in us when we take hold of her completely."

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Source: Concerning the Astral World and Devachan, pp. 125-126