At present the dawn of the sixth post-Atlantean cultural period already proclaims itself. For what is to arise in human evolution at a certain time begins to ripen in the preceding age. What is already able to show its beginnings at present is the discovery of the link that unites the two impulses in the human breast: material culture and life in the world of the spirit. For this purpose it is necessary that the results of spiritual perception are comprehended, and also that the manifestations of the spirit are recognized in the observations and experiences of the sense world. The sixth cultural epoch will bring the harmony between these two impulses to complete development.
Source: Rudolf Steiner – GA 13 – An Outline of Occult Science: IV: The evolution of the cosmos and man (part 7)
Translated by Maud and Henry B. Monges and revised for this edition by Lisa D. Monges.