“To do real good physics work”: comes around the 28:20 mark in a 1981 TV
interview with Richard Feynman for the BBC Horizon program (the interview
aired in the United States as an episode of NOVA). The YouTube video of this
interview that I watched when researching this book has since been removed due
to a copyright complaint by the BBC (https://www.youtube.com/watch?
v=Bgaw9qe7DEE). Transcripts of the relevant quote, however, can be found at
http://articles.latimes.com/1988-02-16/news/mn-42968_1_nobel-prize/2
and
http://calnewport.com/blog/2014/04/20/richard-feynman-didnt-win-a-nobel-by-
responding-promptly-to-e-mails/
and
http://www.worldcat.org/wcpa/servlet/DCARead?