“Trust was a double-edged sword. It could give you hope, but it could cut you in an instant when it was broken.”
“Evil is a double-edged sword, if you use it you'll end up cutting you”
“Anger is a double edged sword and it generally cuts the one who yields it the deepest”
“...but hope seduces like a silver tongue, double-edged like a dagger that cuts both ways.”
“Information can be such a double-edged sword.”
“But the truth is a double-edged sword; it is a dangerous thing.”