Fellow atheists: Who are some non-religious people whose stories are examples of ethical humanism?

Can you give me a list of people who we can look up to, and particularly to present as models for our children, who have done great things for humanity without any religious belief? (Either past or present)
Update: Super Nintendo: No, actually. If they have religious beliefs, then the religious will always equate their good works with the spirit of god in them. We need to hold up those who are known to be without religion.
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