Eureka

Man or Matter Introduction to a Spiritual Understanding of Nature on the Basis of Goethe's Method of Training Observation and Thought

Eureka: A Prose Poem

Astronomical Myths: Based on Flammarions's "History of the Heavens"

The Mosaic History of the Creation of the World Illustrated by Discoveries and Experiments Derived from the Present Enlightened State of Science; With Reflections, Intended to Promote Vital and Practical Religion

The Day After Death; Or, Our Future Life According to Science (New Edition)

Religion und Kosmos