Of course, the liar often imagines that he does no harm as long as his lies go undetected.

I think it [getting a gun] should be like getting a pilot's license. I think you should require training to get a license to have a gun.

What would our world be like if we ceased to worry about 'right' and 'wrong,' or 'good' and 'evil,' and simply acted so as to maximize well-being, our own and that of others? Would we lose anything important?

The moral truth here is obvious: anyone who feels that the interests of a blastocyst just might supersede the interests of a child with a spinal cord injury has had his moral sense blinded by religious metaphysics.

Water is two parts hydrogen and one part oxygen. What if someone says, “Well, that’s not how I choose to think about water.”? All we can do is appeal to scientific values. And if he doesn’t share those values, the conversation is over. If someone doesn’t value evidence, what evidence are you going to provide to prove they should value it? If someone doesn’t value logic, what logical argument could you provide to show the importance of logic?

Each increment of knowledge imparted in this way is so satisfying-and one's ignorance at every stage so consequential-that the process of learning BJJ can become remarkably addictive. I have never experienced anything quite like it.

If one doesn't value logic, what logical argument would you invoke to prove they should value logic?