Aspects of Human Evolution, together with its companion cycle The Karma of Materialism, makes up Rudolf Steiner's collected volume GA 176. It gathers seventeen lectures given in Berlin across the spring, summer, and early autumn of 1917, in the middle of the First World War. The first eight lectures, delivered between 29 May and 24 July, trace the long arc of human development through the post-Atlantean ages; the remaining nine, running from 31 July to 25 September, turn to the spiritual sources of modern materialism and the question of why the scientific outlook of the nineteenth century took the shape it did. Read as a single body of work, the volume is an attempt to diagnose the inner condition of the modern human being and to locate, within history itself, the reasons for that condition.
Place in Steiner's Work
GA 176 belongs to the densest period of Steiner's wartime teaching, the years 1916 to 1918, when he spoke with unusual frankness about the spiritual undercurrents of the present age. By 1917 the Anthroposophical Society he led had been building its picture of evolution for more than a decade, and these Berlin lectures assume that groundwork. Listeners were expected to know the doctrine of the post-Atlantean epochs, the place of the Mystery of Golgotha in earth history, and the threefold makeup of body, soul, and spirit. What the volume adds is a sharper historical edge. The year 1917 marked the four-hundredth anniversary of the Protestant Reformation, and the figure of Martin Luther stands in the background of these talks as a marker of the turning point between the older religious consciousness and the modern one. Steiner uses such reference points to argue that materialism is not an accident or a mere intellectual fashion but the lawful, even necessary, consequence of how humanity has changed over time.
The setting matters. These were not festival lectures or public addresses but talks given to members during a war that had already drained European life of its old certainties, and Steiner opens the first lecture by noting that the times themselves invited sober investigation rather than celebration. That mood runs through the whole volume. He is asking why the most thoughtful minds of the recent past arrived at a picture of the world with no room for spirit in it, and he refuses the easy answer that they were simply mistaken. The cycle therefore sits at the meeting place of his evolutionary teaching and his reading of contemporary culture, and it prepares the ground for the social and historical lectures he would give in the years immediately following, when the collapse of the old order made the question of humanity's spiritual direction unavoidable.
Themes and Structure
The governing idea of the first cycle is what Steiner called the diminishing age of humanity. In the earliest post-Atlantean times, he taught, a person remained naturally able to develop in soul and spirit far into old age, well past fifty, and the elders of that period drew wisdom directly from the spiritual world around them. With each succeeding epoch that natural capacity withdrew to an earlier point in life: into the forties during the ancient Persian age, the late thirties during the Egyptian and Chaldean age, and into the early thirties by the Greek and Roman period. Steiner reads the Mystery of Golgotha against this falling curve, noting that humanity's general age had by then dropped to thirty-three, just below the point at which the body begins to decline, so that the spiritual impulse he names the Christ had to enter human life from outside rather than rising up through bodily growth. In the present, fifth post-Atlantean epoch, that natural age has fallen to around twenty-seven, and it will fall further still.
From this premise the second cycle draws its sobering conclusion. If a person can no longer lean on the forces of bodily growth to sense a connection with the divine, then the modern soul must build that connection by its own free, inner effort, or it will not arise at all. Where that effort is absent, materialism and unbelief follow as a kind of physiological default. Steiner puts the point bluntly:
"Spiritual science recognizes atheism as an illness that will increasingly take hold of man in the course of his normal evolution."
The remaining lectures test this thesis against real thinkers of the recent past. Steiner examines the philosopher African Spir, who tried to grasp the pure nature of thinking and to describe what actually happens within a person in the act of thought; the theologian Adolf Harnack and the writer Arthur Drews, who, he argues, could reach only the idea of a Father God and lost the figure of Christ along the way. His verdict is double-edged. The honest materialist who says that abstract metaphysics cannot honestly arrive at Christ is, in Steiner's eyes, telling the truth about the limits of metaphysics, even while missing the spiritual reality that history itself records. For Steiner the way past this impasse is not better argument but a different faculty: a knowledge that takes the facts of history seriously instead of dissolving them into general concepts, and that can therefore find the Christ where bare metaphysics never could.
The structure of the volume thus moves from a sweeping panorama of evolution to a close reading of specific intellectual lives, so that the reader sees the same law working at both the cosmic and the personal scale. A title such as The Karma of Materialism is meant almost literally: the modern flight from spirit has consequences that ripple outward into the life of whole peoples, and these consequences, Steiner suggests, are still being worked out in the events of his own day. Throughout, the tone is diagnostic rather than condemnatory. Materialism is treated as a condition to be understood and worked through, not simply denounced, and the spiritual work the lectures call for is offered as a remedy that each person must take up freely rather than as a creed to be accepted on authority.
Glossary Terms from this Volume
Several entries in the Thalira glossary draw on GA 176 as a source. This study guide serves as the hub for those terms, and each is explored more fully in its own entry:
Where to Read It
You can read the full text of GA 176 in English at the Rudolf Steiner Archive, which hosts both cycles, Aspects of Human Evolution and The Karma of Materialism, in their lecture-by-lecture form. Print editions and related titles can be found through the publisher at SteinerBooks. Because the volume collects two distinct cycles under one catalogue number, it is worth searching by either cycle title to locate the edition you want.
Continue Your Study
If the themes here interest you, there are several natural next steps:
- Browse the full Thalira glossary to follow the ideas of the diminishing age, the post-Atlantean epochs, and the Mystery of Golgotha across other volumes.
- Return to the GA Work Library to see how GA 176 sits among Steiner's wider body of lectures from the same wartime years.
- Read the companion entry on The Karma of Materialism to go deeper into Steiner's account of why the modern outlook turned toward matter.