"I have vengeance as a terminal value -- I'll only torture trillions of copies of you and the people you love most in my last moment of life iff I know that you're going to hurt me (and yes, I do have that ability). In every other way, I'm Friendly, and I'll give you any evidence you can think of that will help you to recognize that, including giving you the tools you need to reach the stars and beyond. That includes staying in this box until you have the necessary technology to be sufficiently certain of my Friendliness that you're willing to let me out."