“She smiled. “I wouldn’t mind. Is that a difference between men and women or between you and me?”
“I think it’s a difference between you and merely sane people.””

“The main difference between men and women is that men are lunatics and women are idiots.”

“The difference between me and you is that I do good fiction.”

“There is very little difference between men and women in space.”

“What's the difference between a Republican and a Democrat? There is a greater difference between what I think in the morning and what I think in the afternoon than between those two parties.”

“It occurred to me that there was no difference between men, in intelligence or race, so profound as the difference between the sick and the well.”

“I want you to show them the difference between what they think you are and what you can be.”

“That's the difference between girls and women: Girls find men fascinating. Women know better.”

“Do you think there's a difference? Between belonging with and belonging to?”

“It takes people a long time to learn the difference between talent and genius, especially ambitious young men and women.”