Corner icon Lectures Section image

Rudolf Steiner Archive

Calendar of the Soul

Northern Hemisphere
Week 25

I can belong now to myself
And shining spread my inner light
Into the dark of space and time.
Toward sleep is urging all creation,
But inmost soul must stay awake
And carry wakefully sun's glowing
Into the winter's icy flowing.

Southern Hemisphere
Week 51

Into our inner being
The riches of the senses pour.
The Cosmic Spirit finds itself
Reflected in the human eye,
Which ever must renew its strength
From out that spirit source.

—Translation by Ruth and Hans Pusch

See GA 40 for full calendar and German text.

Second Scientific Lecture-Course:
Warmth Course
GA 321

Rudolf Steiner discusses the nature of warmth, its relationship to the four states of matter, to light, to color, and to the sub-earthly and super-earthly realms. He strives to extend modern ideas of physics through the understandings achieved by spiritual science. With extensive notes and diagrams, this work comprises essential reference material for teachers of the natural sciences, as well as interested parents and others.

The Second Scientific Lecture-Course: The Warmth Course (The Theory of Heat) — This publication is intended for those with a serious interest in the extension of modern scientific ideas about the physical sciences.

The title, in German, is: Geisteswissenschaftliche Impulse zur Entwickelung der Physik. Zweiter naturwissenschaftlicher Kurs. Die Warme auf der Grenze positiver und negativer Materialitaet.

This lecture series is presented here with the kind permission of the Rudolf Steiner Nachlassverwaltung, Dornach, Switzerland. Translated by George Adams with editing by Alice Wulsin and Gerld Karnow.

Lecture I March 01, 1920
Lecture II March 02, 1920
Lecture III March 03, 1920
Lecture IV March 04, 1920
Lecture V March 05, 1920
Lecture VI March 06, 1920
Lecture VII March 07, 1920
Lecture VIII March 08, 1920
Lecture IX March 09, 1920
Lecture X March 10, 1920
Lecture XI March 11, 1920
Lecture XII March 12, 1920
Lecture XIII March 13, 1920
Lecture XIV March 14, 1920

Support Our Services

The Archive is a "pay what you can" service. If you or your organization use and value our work, please consider making a financial contribution. Visit our Help Out page for additional ways to support us. Thank you!

Please Donate!