Feynman gave this as a public address to a 1955 meeting of the National Academy of Sciences. It was then published in Engineering and Science 19: 13–15. ISSN 00

Feynman gave this as a public address to a 1955 meeting of the National Academy of Sciences. It was then published in Engineering and Science 19: 13–15. ISSN 0013-7812. You can find it retranscribed here http://www.faculty.umassd.edu/j.wang/feynman.pdf http://www.faculty.umassd.edu/j.wang/feynman.pdf or there http://alexpetrov.com/memes/sci/value.html http://alexpetrov.com/memes/sci/value.html