i have often heard "Bring Enough Gun". i have never heard "bring enough knife". to me, that says it all.
I've never heard "Bring enough fist" either but that doesn't mean that I wouldn't use it to defend myself. I've also heard "If the only tool you have is a hammer everything starts to look like a nail". If you think a gun is the only solution when your fighting your setting yourself up for failure, what if your gun jams, is lost in a struggle etc.? How about "Bring enough fight". Whatever the saying if you don't have the mindset and will to do whatever it takes to survive whatever your carrying will just be bonus prizes for the bg.