This lecture series consists of the first two lectures in the cycle
of six lectures entitled,
Natural Science and Human History since Ancient Times.
Published in German as,
Die Naturwissenschaft und die Weltgeschichtliche Entwickelung der
Menschheit Seit dem Altertum.
They were given at Dornach in mid-May, 1921.
From a shorthand report unrevised by the lecturer. Presented here with the
kind permission of the
Philosophisch-Anthroposophischer Verlag,
Dornach, Switzerland. English translation by permission of
H. Collison.