This masterpiece of esotericism places humanity at the heart of the vast, invisible processes of cosmic evolution. Steiner worked and refined the Rosicrucian cosmology to make it more specific and clear.

Today, the book "Internal Science" is still as relevant as it was when it was first published in 1910 and remains the most comprehensive and effective presentation of a spiritual alternative to modern, materialistic cosmologies and the strict Darwinian view of human nature and evolution.

In this fundamental work of Spiritual Science, we see how the creation and evolution of humanity are embedded in the heart of the vast, invisible web of interacting cosmic beings, through which the alchemical processes of cosmic evolution continue to unfold.

It includes descriptions of the physical-spiritual composition of man - the relationships of the various "bodies" of man with sleep and death - and a detailed, practical guide to methods and exercises (including "Rosicrucian Meditation"), through which we can gain knowledge of the spiritual worlds.

"Internal Science" is an essential read for all seekers of inner spirituality and Anthroposophy.