"I felt less like myself. Though I could put more words to the page per hour on Adderall, I had a nagging suspicion that I was thinking w/ blinders on…"<br />
<br />
"There's also the risk that Adderall can work too well…Paul Erdös, who famously opined that "a mathematician is a device for turning coffee into theorems," began taking Benzedrine in his late 50s & credited drug w/ extending his productivity long past expiration date of colleagues. But he eventually became psychologically dependent. In 1979, a friend offered Erdös $500 to kick his Benzedrine habit for a month. Erdös met the challenge, but his productivity plummeted so drastically that he decided to go back…After a 1987 Atlantic profile discussed his love affair w/ psychostimulants, [he] wrote the author a rueful note. "You shouldn't have mentioned the stuff about Benzedrine. It's not that you got it wrong. It's just that I don't want kids who are thinking about going into math to think that they have to take drugs to succeed.""

Richard Feynman on the place: "When I was at Princeton in the 1940s I could see what happened to those great minds at the Institute for Advanced Study, who had been specially selected for their tremendous brains and were now given this opportunity to sit in this lovely house by the woods there, with no classes to teach, with no obligations whatsoever. These poor bastards could now sit and think clearly all by themselves, OK? So they don't get any ideas for a while: They have every opportunity to do something, and they're not getting any ideas. I believe that in a situation like this a kind of guilt or depression worms inside of you, and you begin to worry about not getting any ideas. And nothing happens. Still no ideas come.<br />
<br />
Nothing happens because there's not enough real activity and challenge: You're not in contact with the experimental guys. You don't have to think how to answer questions from the students. Nothing!"

"The Happy Ending problem (so named by Paul Erdős because it led to the marriage of George Szekeres and Esther Klein) is the following statement:

"In 1938, he accepted his first American position as a scholarship holder at Princeton University. At this time, he began to develop the habit of traveling from campus to campus. He would not stay long in one place and traveled back and forth among mathematical institutions until his death.