(Excerpt from 'Surely You're Joking, Mr Feynman!') Nothing groundbreaking; the context is that Feynman asks his friend about how to pick up women. (The narrator is Feynman). A page later, he tries the advice and it works.

"Ok, he says. "The whole principle is this: The guy wants to be a gentleman. He doesn't want to be thought of as a impolite, crude, or especially a cheapskate. As long as the girl know's the guys motives so well, it's easy to steer him in the direction she wants him to go. "Therefore," he continued, "under no circumstances be a gentleman! You must disrespect the girls. Furthermore, the very first rule is, don't buy a girl anything - not even a package of cigarettes- until you've asked her if she'll sleep with you, and you're convinced that she will, and that she's not lying."

"Uh... you mean... you don't... uh... you just ask them?"

"OK," he says, "I know this is your first lesson, and it may be hard for you to be so blunt. So you might buy her one thing - just one little something - before you ask. But on the other hand, it will only make it more difficult."

Well, someone only has to give me the principle, and I get the idea. All during the next day I built up my psychology differently: I adoped the attitude that those bar girls are all bitches, that they aren't worth anything, and they're not going to give you a goddamn thing; I'm not going to be a gentleman to such worthless bitches, and so on. I learned it till it was automatic.