I am trying to find out whether the following quote is authentic, and if not where it came from:
"A good general not only sees the way to victory, he also knows when victory is impossible."
Polybius
It was claimed that this quote came from Polybius's Hsitories, but I could not find it in the works that are still available for us: http://www.perseus.tufts.edu/hopper/text?doc=Perseus:text:1999.01.0234
I also have no idea who quoted it first in modern times.
Any help is much appreciated.
D.