God and the World: A Survey of Thought

Life: Its True Genesis

The Necessity of Atheism

Science and Morals and Other Essays

The Religious Sentiment Its Source and Aim: A Contribution to the Science and Philosophy of Religion

The Sources of Religious Insight

The Relations of Science and Religion The Morse Lecture, 1880

The Essence of Christianity Translated from the second German edition

Gedanken über Religion Die religiöse Entwicklung eines Naturforschers vom Atheismus zum Christentum.

Last Words on Evolution: A Popular Retrospect and Summary

The Creator, and what we may know of the method of creation

Uskonto ja tiede