Dan Barker & Dan Barker 
Mere Morality [PDF ebook] 

What drives us to be good? How do we even know how to be good? Philosophers and theologians have dealt with such questions for millennia, but Dan Barker thinks the answers are not so complicated. In
Mere Morality, he argues there’s no need to appeal to supernatural commandments or the fear of some higher power when considering morality. Stripping ‘good’ and ‘evil’ down to the basics, he offers a simple compass for navigating life’s most difficult moral and ethical dilemmas.