Interjection
be a devil
(UK, informal) Used to encourage someone to do something when they are unsure whether they should.
I would rather be a devil in alliance with truth, than an angel in alliance with falsehood. Ludwig Andreas Feuerbach
If a man is not rising upwards to be an angel, depend upon it, he is sinking downwards to be a devil. He cannot stop at the beast. The most savage of men are not beasts; they are worse, a great deal worse. Samuel Taylor Coleridge
I am an Agnostic because I am not afraid to think. I am not afraid of any god in the universe who would send me or any other man or woman to hell. If there were such a being, he would not be a god; he would be a devil. Clarence Darrow
When you dance with the devil, it might as well be a devil who can give you your own corner of hell to rule. Laurell K. Hamilton
Do you believe in angels, Robard?” he asked faintly. "No, sir.” "Well, that's alright then, she must be a devil. Can deal with those, y'know. Charles Stross