As the human being is prepared in the mother’s body, so in the body of the great world mother — where we are while leading our physical life — is prepared what is necessary to make it possible for us to see and act in higher worlds. One is perfectly justified to speak of a higher world and to value it higher than our lower world, but we should only use these terms in a technical sense. All worlds are, basically, equally valid expressions of the highest principle, in different forms. We should not despise any world. In this way we learn to relate ourselves rightly towards both the lower and the higher worlds.
Source: Rudolf Steiner – GA 94 – The Gospel of St. John – Third Lecture – Berlin, 5th March 1906