In listening and sensing the inner language of nature in the course of a year, we can rediscover something of our essential human nature; for we as human beings are intimately related to all that goes on within the spiritual forces behind the changing face of nature and take part, albeit unconsciously, in these inner changes throughout the course of the year.

This edition of the Calendar of the Soul was the original written by Rudolf Steiner and was illustrated under his direction by Imma von Eckhardstein with new images of the Zodiac as well as other evolutionary images. This edition also includes Steiner's own preliminary sketches and oral explanations of them.

In these lectures, given just days after the end of World War I, Steiner describes the new developments in mechanics, politics, and economy, as well as new capacities and methods in the West and the East. He reveals their fruitful potentials, but also the dangers of their abuse. He discusses social and antisocial instincts, spectres of the Old Testament in the nationalism of the present, and the innate capacities of various nations.