Conversation so far:
What were Charles Darwin's religious views?
Charles Darwin wrote that I have never been an atheist. I think that generally ... an agnostic would be the most correct description of my state of mind.
What does agnostic mean?
A person who believes that nothing is known or can be known of the existence or nature of God.
Are there any other interesting aspects about the Charles Darwin article other than his religious views?
Charles Darwin noted that aiding the weak to survive could lose the benefits of natural selection, but cautioned that withholding such aid would endanger the instinct of sympathy.

Question: What did he do due to these beliefs?
Self-contained rewrite: What did Charles Darwin do due to his beliefs that withholding aid to the weak would endanger the instinct of sympathy?