If I believe that abortion is wrong, and I want to convince you that it's wrong, there's no reason I should recount to you my personal narrative of how I came to believe this.

It only takes twenty generations of selective breeding to create large differences or appearance and behavior in other mammals.

Anyone who values truth should stop worshipping reason.

We can tolerate great diversity in our aesthetic beliefs, but we can't tolerate much diversity in our moral beliefs.

If you have a personality predisposed to liberalism, you might gravitate more to the artsy crowd or the anti-establishment crowd. And then those peers will affect you, and they will give you values, and you will copy them.

In accounts of men in battle, there is an incredible adrenaline rush from group-versus-group conflict. The fervor and passion of partisans is clearly rewarding; and if it's rewarding, it involves dopamine; and if it involves dopamine, then it is potentially addictive.

Liberals and conservatives are opponents in the most literal sense, each using the myth of pure evil to demonize the other side and unite there own.