Darwin was Agnostic, just as are the many who are labelled "athiest" because they do not believe in Christ or follow the writings of somebody else's version of what God is or what he supposedly said.
Religious Belief
By Charles Darwin
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This is an extract from:
The Autobiography of Charles Darwin 1809-1882
With original omissions restored
Edited with Appendix and Notes
by his grand-daughter
Nora Barlow.
(1958) During these two years I was led to think much about religion. Whilst on board the Beagle I was quite orthodox, and I remember being heartily laughed at by several of the officers (though themselves orthodox) for quoting the Bible as an unanswerable authority on some point of morality. I suppose it was the noveltry of the argument that amused them. But I had gradually come, by this time, to see that the Old Testament from its manifestly false history of the world, with the Tower of Babel, the rainbow at sign, etc., etc., and from its attributing to God the feelings of a revengeful tyrant, was no more to be trusted than the sacred books of the Hindoos, or the beliefs of any barbarian.
The question then continually rose before my mind and would not be banished, -- is it credible that if God were now to make a revelation to the Hindoos, would he permit it to be connected with the belief in Vishnu, Siva, &c, as Christianity is connected with the Old Testament. This appeared to me utterly incredible.
By further reflecting that the clearest evidence would be requisite to make any sane man believe in the miracles by which Christianity is suppoted, -- that the more we know of the fixed laws of nature the more incredible do miracles become, -- that the men at that time were ignorant and credulous to a degree almost incomprehensible by us, -- that the Gospels cannot be proved to have been written simultaneous with the events, -- that they differ in many important details, far too important as it seemed to me to be admitted as the usual inaccuracies of eyewitnesses; -- by such reflections as these, which I give not as having the least noveltry or value, but as they influenced me, I gradually came to disbelieve in Christianity as a divine revelation. The fact that many false religions have spread over large portions of the earth like wild-fire had some weight on me. Beautiful as is the morality of the New Testament, it can hardly be denied that its perfection depends in part on the interpretation which we now put on metaphors and allegories.
...Although I did not think much about the existence of a personal God until a considerably later period of my life, I will here give the vague conclusions to which I have been driven. The old argument of design in nature, as given by Paley, which formerly seemed to me so conclusive, fails, now that the law of natural selection has been discovered.
We can no longer argue that, for instance, the beautiful hinge of a bivalve shell must have been made by an intelligent being, like the hinge of a door by man. There seems to be no more design in the variability of organic beings and in the action of natural selection, than in the course the wind blows. Everything in nature is the result of fixed laws. But I have discussed this subject at the end of my book on the Variation of Domestic Animals and Plants, and the argument there given has never, as far as I can see, been answered.
...The state of mind which grand scenes formerly excited in me, and which was intimately connected with a belief in God, did not essentially differ from that which is often called the sence of sublimity; and however difficult it may be to explain the genesis of this sence, it can hardly be advanced as an argument for the existence of God, any more than the powerful though vague and similar feelings excited by music.
I cannot pretend to throw the least light on such abstruse problems. The mystery of the beginning of all things is insoluble to us; and I for one must be content to remain an Agnostic.
http://www.update.uu.se/~fbendz/library/cd_relig.htm...I suppose that means he was just a serial killer?