Michael Ginsberg: "I feel bad for you."

Don Draper: "I don't think about you at all."

(The irony of this line is that Draper, in fact, was obsessed with one-upping Ginsberg the whole episode.)

Things like this are what make Don Draper such a fantastic (and fantastically loathsome) character. He knows which buttons to push at which times. It is that quality that makes him both successful in his career and miserable in his life.

"Good breeding consists in concealing how much we think of ourselves and how little we think of the other person." -- Mark Twain