
"Hermann Weyl and the Unity of Knowledge" http://www.weylmann.com/wheeler.shtml, American Scientist (July-August 1986) Vol. 74, pp. 366-375. Reprinted in At Home in the Universe (1993), p. 171. http://books.google.com/books?id=w9BXAAAAYAAJ&q=%22hermann+weyl+and+the+unity+of+knowledge%22#search_anchor