Many atheists do not believe in free will. They don’t believe in free will because they believe we, and our thoughts, are the products of matter and energy and nothing else and therefore we are basically ‘meat
machines’ or ‘moist robots’ and therefore no more have free will than a robot, or a dog.
This belief, needless to say, has enormous implications for the idea of moral responsibility because someone who does not have free will is not responsible for their actions.
For the sake of the record, here are quotes from four very prominent scientists and atheists on the subject of free will and morality.
Let me summarize my views on what modern evolutionary biology tells us loud and clear — and these are basically Darwin’s views. There are no gods, no purposes, and no goal-directed forces of any kind. There is no life after death. When I die, I am absolutely certain that I am going to be dead. That’s the end of me. There is no ultimate foundation for ethics, no ultimate meaning in life, and no free will for humans, either.
William Provine, historian of science and of evolutionary biology and population genetics
The position of the modern evolutionist is that humans have an awareness of morality because such an awareness of biological worth. Morality is a biological adaptation no less than are hands and feet and teeth. Considered as a rationally justifiable set of claims about an objective something, ethics is illusory. I appreciate when someone says, ‘Love thy neighbor as thyself,’ they think they are referring above and beyond themselves. Nevertheless, such reference is truly without foundation. Morality is just an aid to survival and reproduction, . . . and any deeper meaning is illusory.
Michael Ruse, philosopher of science who specializes in the philosophy of biology, well known for his work on the relationship between science and religion
In a universe of blind physical forces and genetic replication, some people are going to get hurt, other people are going to get lucky, and you won’t find any rhyme or reason in it, or any justice. The universe that we observe has precisely the properties we should expect if there is, at bottom, no design, no purpose, no evil and no good, nothing but blind, pitiless indifference… DNA neither knows nor cares. DNA just is. And we dance to its music.
Richard Dawkins (needs no introduction)
’You’, your joys and your sorrows, your memories and your ambitions, your sense of personal identity and free will, are in fact no more than the behaviour of a vast assembly of nerve cells and their associated molecules.’
Francis Crick (co-discoverer of the double helix)