“Evil is a double-edged sword, if you use it you'll end up cutting you”
“Trust was a double-edged sword. It could give you hope, but it could cut you in an instant when it was broken.”
“Anger is a double edged sword and it generally cuts the one who yields it the deepest”
“Information can be such a double-edged sword.”
“But the truth is a double-edged sword; it is a dangerous thing.”
“Free will...is a double edged sword. It can either lead you down the roads of peace, joy and happiness or the roads of darkness and despair!”