The day before Sunday’s health care vote, President Obama gave an unscripted talk to House Democrats. Near the end, he spoke about why his party should pass reform: “Every once in a while a moment comes where you have a chance to vindicate all those best hopes that you had about yourself, about this country, where you have a chance to make good on those promises that you made ... And this is the time to make true on that promise. We are not bound to win, but we are bound to be true. We are not bound to succeed, but we are bound to let whatever light we have shine.”

And on the other side, here’s what Newt Gingrich, the Republican former speaker of the House — a man celebrated by many in his party as an intellectual leader — had to say: If Democrats pass health reform, “They will have destroyed their party much as Lyndon Johnson shattered the Democratic Party for 40 years” by passing civil rights legislation.

I’d argue that Mr. Gingrich is wrong about that: proposals to guarantee health insurance are often controversial before they go into effect — Ronald Reagan famously argued that Medicare would mean the end of American freedom — but always popular once enacted.

But that’s not the point I want to make today. Instead, I want you to consider the contrast: on one side, the closing argument was an appeal to our better angels, urging politicians to do what is right, even if it hurts their careers; on the other side, callous cynicism. Think about what it means to condemn health reform by comparing it to the Civil Rights Act. Who in modern America would say that L.B.J. did the wrong thing by pushing for racial equality? (Actually, we know who: the people at the Tea Party protest who hurled racial epithets at Democratic members of Congress on the eve of the vote.)