Guns and Knives?

[bushidomartialarts]

perpare for the worst while expecting the best.

"there's a bullet out there with your name on it right now. the trick is to die of old age before it finds you."
-- captain malcolm reynolds
firefly

 

[Hand Sword]

I think it's : expect (train for) the worst and hope for the best. Either way the quote has the right idea!