At that point the G.O.P. will enter what Kuhn called the revolution phase. During these moments you get a proliferation of competing approaches, a willingness to try anything. People ask different questions, speak a different language, congregate around a new paradigm that is incommensurate with the last.

That’s where the G.O.P. is heading. So this is a moment of anticipation. The great question is not, Should I vote for Hillary or sit out this campaign? The great question is, How do I prepare now for the post-Trump era?

The first step clearly is mental purging: casting aside many existing mental categories and presuppositions, to shift your identity from one with a fixed mind-set to one in which you are a seeker and open to anything. The second step is probably embedding: going out and seeing America again with fresh eyes and listening to American voices with fresh ears, paying special attention to that nexus where the struggles of Trump supporters overlap with the struggles of immigrants and African-Americans.

This is a moment for honesty. Valuably, Trump has exposed the rottenness of the consultant culture, and the squirrelly way politicians now talk to us. This is a moment for revived American nationalism. Trump’s closed, ethnic nationalism is dominant because Iraq, globalization and broken immigration policies have discredited the expansive open form of nationalism that usually dominates American culture.

This is also a moment for redefined compassion. Trump is loveless. There is no room for reciprocity and love in his worldview. There is just winning or losing, beating or being beaten.

It is as if he was a person who received no love and tried to compensate through competition. That is an ugly, freakish and untenable representation of the human condition. Somehow the Republican Party will have to rediscover a language of loving thy neighbor, which is a primary ideal in our culture, and a primary longing of the heart.

This is also a moment for sociology. Reaganism was very economic, built around tax policies, enterprise zones and the conception of the human being as a rational, utility-driven individual. The Adam Smith necktie was the emblem of that movement.