After quite a bit of searching, I'm unable to find exactly what the
quote is or exactly who said it... in fact, there are three variants...
And this one? Much weaker, I think...
That's quoted at
http://www.public.iastate.edu/~physics/sci.physics/faq/occam.html
and at
gopher://gopher.ainet.com:70/00/Misc/Quotations/author.collections/Einstein
Who's this "Gregory Singleton" person? I have no idea, but he's credited
with this bon mot at
http://www.fifer.net/quotes/
and at
http://www.cs.pvamu.edu/~jmartin/quotes.htm
http://www.hotcom.com/doug/oldquote.html