There is a whole field of inquiry that has come up in the last 30 or 40 years - some call it sociobiology or evolutionary psychology - relating to where we get our moral sense and why we value the idea of altruism, and locating both answers in behavioral adaptations for the preservation of our genes.
Richard DawkinsWe are built as gene machines and cultured as meme machines, but we have the power to turn against our creators. We, alone on earth, can rebel against the tyranny of the selfish replicators.
Richard DawkinsWe have seen that living things are too improbable and too beautifully 'designed' to have come into existence by chance.
Richard DawkinsIt's a horrible idea that God, this paragon of wisdom and knowledge, power, couldn't think of a better way to forgive us our sins than to come down to Earth in his alter ego as his son and have himself hideously tortured and executed so that he could forgive himself.
Richard Dawkins