"There seems, however, to be a problem with some of our more cherished beliefs about the world: they are leading us, inexorably, to kill one another.… - Sam Harris

It seems that if our species ever eradicates itself through war, it will not be because it was written in the stars but because it was written in our books; it is what we do with words like 'God' and 'paradise' and ''sin' in the present that will determine our future.

it is in believing one thing while intending to communicate another that every lie is born.

Examples of unintelligent design in nature are so numerous that an entire book could be written simply listing them. I will permit myself just one more example. The human respiratory and digestive tracts share a little plumbing at the pharynx. In the United States alone, this intelligent design feature lands tens of thousands of children in the emergency room each year. Some hundreds choke to death. Many others suffer irreparable brain injury. What compassionate purpose does this serve? Of course, we can imagine a compassionate purpose: perhaps the parents of these children needed to be taught a lesson; perhaps God has prepared a special reward in heaven for every child who chokes to death on a bottle cap. The problem, however, is that such imaginings are compatible with any state of the world. What horrendous mishap could not be rationalized in this way? And why would you be inclined to think like this? How is it moral to think like this?

So to make a little quibble of my own, I think the essence of what we want in science are not justified beliefs but good explanations.