Robert Jarvic, the inventor of the artificial heart and an atheist, wrote:
In reality there are no such things as human rights. They are conventions we agree to abide by.
All we know is we are part of nature and there is no scientific basis whatsoever for thinking we are better than all the rest of it.
That means, we have no more basic rights that viruses, other than those we have created for ourselves through our intellect.
He means, justice apart from God is just a fairy-tale.