4. Anthroposophical Spiritual Science and the Great Questions of Civilization in the Present Day

Dear participants, today we are justifiably satisfied that we no longer view the external and spatial structure of the world in a medieval way, based only on outward appearances. We stand on the standpoint of the Copernican world view, which is a heliocentric one. The medieval man believed that the Earth was at the center of the planetary system, and indeed of the entire star system, and that the sun and the other stars moved around the Earth. The heliocentric solar system brought about a complete reversal of all relationships, and today we hold fast to this reversal as something that we already absorb in our ordinary school education, in which we are immersed with all our education. We look back at the people of the Middle Ages, we look back at the people of ancient times, who in their Ptolemaic world system saw that which I have just characterized, the geocentric. But by no means did all people in those ancient times accept only the geocentric world system. We need only read Plutarch's account of the world system of an ancient Greek wise man of the pre-Christian era, Aristarchus of Samos. Aristarchus of Samos already places the sun at the center of our planetary system; he has the earth revolve around the sun. And if we take, not in the details, about which recent natural science has brought so much, but in the main features, the heliocentric system of Aristarchus of Samos, then it basically completely agrees with the one that is ours today.