With the entrance of Christ into the evolution of the earth an entirely new impulse or direction was given to evolution. External facts of history also express this. In the early times of post-Atlantean evolution men knew very well that above them there was not merely a physical Mars, but that what they saw as Mars, Jupiter or Saturn was the expression for a spiritual being. In later times this perception was completely forgotten. The heavenly bodies became, according to human ideas, mere bodies to be estimated according to their physical condition. And in the Middle Ages people saw in connection with the stars only what the eyes can see--the sphere of Venus, the sphere of the Sun, the sphere of Mars, etc., up to the sphere of the fixed stars; and then came the eighth sphere like a solid blue wall behind. Then Copernicus appeared and broke down the idea that only that which is perceptible to the senses can be authoritative. The modern physical scientists may indeed say: “It is madness to declare that the world is Maya, or illusion, and that you must look into a spiritual world in order to see the truth, for in spite of all you say true science is that which relies on the senses and notifies what these senses tell.” But when did astronomers rely only on the senses? Surely at the very time when that astronomical science was dominant which is attacked by the science of to-day! It was at that time when Copernicus began to think out what exists in the cosmic space beyond the evidence of the senses, that our modern astronomy as a science began. And so it is in every domain of science. Everywhere that science, in the most modern sense of the word, has arisen, it has done so in opposition to what had been apparent to the senses. When Copernicus declared “what you see is Maya--or deception, rely on what you cannot see,” then the science came into being which is recognized as such to-day. It might thus be said to the representative of modern science “your science itself only became ‘science’ when it was no longer willing to depend upon the senses only.” Giordano Bruno came as philosophical interpreter of the teachings of Copernicus. He led the gaze of man out into cosmic space, and announced that what people had called the limitations of space, what they had placed there as the eighth sphere limiting everything in space--was in reality _no_ limitation; it was Maya, or illusion; for an infinite number of worlds had been poured forth into cosmic space. That which was formerly considered to be the boundary of space was shown to be only the boundary of the sense-world of man, and if we direct our gaze _beyond_ the sense-world, we shall no longer see the world only as known to the senses, but we shall also recognize Infinity.