Rudolf Steiner: "In the first cultural epoch of the post-Atlantean age, that of the ancient Indian people, the Spirit of the Epoch consisted in the fact that men looked back to Atlantean times when they dimly perceived higher kingdoms around them. So the Yoga system arose, by means of which they sought to rise into the higher worlds. The physical plane of external reality had little value for them; it was maya, illusion. It will seem strange to you, but it is actually true, that if the ancient Indian civilization, with its lack of interest in the physical plane, had continued, there would never have been railways, telephones, and such things as exist in the physical world today. For it would not have seemed at all important to occupy oneself seriously with physical laws in order to populate the world with all that today represents the achievements of civilization."
It will be necessary also for the more exact branches of human knowledge to come to meet this extension of our thought and understanding of the world. And here allow me to refer to something that may perhaps not be fully intelligible to everyone.