"What do we call conservative, and what do we call liberal, in daily life? A conservative explains behavior spiritually, and personalizes responsibility. In Aristotelian terms, the principle of motion is within us. A liberal, by contrast, explains behavior mechanically, and externalizes responsibility: the principle of motion is outside us. Thus, in the typical policy debate, a liberal makes excuses for the human agent, and a conservative places blame. The spark of the liberal argument — He didn’t have the same opportunities you did — meets the conservative conceptual firewall: Lots of people start poor, but still find ways to make it."