Indeed, in the world beyond grade school, where adults must exercise their moral knowledge and reasoning to conduct themselves in the society, the stakes are greater. There, consistency demands that we acknowledge the existence of moral facts. If it’s not true that it’s wrong to murder a cartoonist with whom one disagrees, then how can we be outraged? If there are no truths about what is good or valuable or right, how can we prosecute people for crimes against humanity? If it’s not true that all humans are created equal, then why vote for any political system that doesn’t benefit you over others? —NYTimes.com.